🛠️ Introduction: Why Rebuild a PINES #2 LH Hydraulic Tube Bender?
Is your old PINES #2 LH showing its age? Maybe it’s starting to leak hydraulic fluid, miss bend angles, or just feels outpaced by today’s production demands. You’re not alone—many fab shops and maintenance managers wrestle with the same question: “Do I keep patching this machine, or do I invest in a new one?”
Here’s the thing—buying new isn’t always the best move, especially if your current bender still has a solid frame and basic mechanical integrity. That’s where a full rebuild of your PINES #2 LH Hydraulic Tube Bender comes in.
Unlike a quick touch-up or cosmetic refresh, a true rebuild is a complete transformation. We’re talking:
- Brand-new hydraulics
- Modern COMPTROL digital controls by Sierra Controllers
- Fully upgraded swing and stationary arms
- New wiring, electrical box, and lubrication systems
In short, it’s a mechanical, hydraulic, and digital rebirth of your machine—designed to get another decade (or more) of reliable service, often at less than half the cost of a new unit.
If you’re serious about boosting performance, improving safety, and cutting future maintenance costs, this guide will walk you through everything that goes into a professionally rebuilt PINES #2 LH—from the swing arm to the control interface and everything in between.
Let’s take a closer look under the hood.
🔧 Rebuilt vs. Refurbished vs. As-Is: Know the Difference
- As-Is:
This means exactly what it sounds like. The bender is sold in its current condition—no updates, no guarantees, and usually no testing. You’re buying risk along with the machine. - Refurbished:
A refurbished tube bender may be cleaned up, repainted, and tested. Some parts might be replaced, but there’s no guarantee of comprehensive inspection or overhaul. It’s often cosmetic. - Rebuilt:
A rebuilt tube bender, like the PINES #2 LH Hydraulic model we’re discussing here, goes through a complete teardown and restoration:- Every major system—mechanical, hydraulic, and electrical—is inspected and rebuilt or replaced.
- The machine is fully recalibrated, tested, and often upgraded with modern control systems.
- It’s essentially given a second life, with the performance and reliability of a new machine—but at a much lower cost.
✅ In this case, the rebuild starts with your own core unit—meaning the same frame and base you’ve been using—so it’s tailored to your production environment while saving on shipping and sourcing costs.
🏭 About PINES Engineering: The Legacy Behind the Machine
PINES Engineering is a well-known American manufacturer with a deep legacy in the tube and pipe bending world. For decades, their machines have been the go-to for:
- Aerospace hydraulic lines
- Automotive exhaust systems
- Boiler and heat exchanger tubing
- Custom fabrication shops
If you’ve ever bent tight-radius stainless steel tubing or handled thick-walled aluminum pipe, chances are you’ve used or seen a PINES machine on the floor. That’s why rebuilding a PINES bender—especially the #2 LH hydraulic model—is often a better long-term investment than switching brands or models.
Rebuilding a PINES bender connects to several industrial processes and buyer interests:
- Tube bending machines and their lifespan
- Hydraulic mandrel benders and precision control
- Fabrication shop tooling upgrades
- Tube bender controller retrofits
- Industrial machine maintenance strategy
By rebuilding instead of replacing, you stay within your current workflow, keep your tooling compatible, and extend the service life of a machine already proven in your production line.
✅ 3. The COMPTROL Controller Upgrade (By Ultimate Tube Bender Parts Inc)
If you’ve ever struggled with outdated controls on your tube bender—unlabeled buttons, unreliable bend accuracy, or time-consuming setups—this upgrade will feel like a game-changer.
The COMPTROL digital controller, built by Sierra Controllers, replaces old-school analog dials and limited PLC panels with a smart, menu-driven interface designed for modern fabrication shops. It’s the brain that brings your rebuilt PINES #2 LH bender up to today’s standards of precision, automation, and ease-of-use.
🧠 Why Upgrade to COMPTROL?
Older tube bender controls can slow down production, frustrate operators, and leave too much room for human error. COMPTROL solves all of that with:
- Intuitive, menu-driven screens
- Alphanumeric part naming (no more cryptic codes!)
- Massive storage capacity for part files and bends
- Manual, semi-automatic, and automatic run modes
- On-screen status displays of angle, bend data, and more
Whether you’re doing short-run custom jobs or high-volume production, the COMPTROL system gives your operators full control without the complexity.
🔗
🧰 Key Features Fabricators Love
Here’s what makes the COMPTROL system a standout in real-world production environments:
- Bend angle feedback and live tracking
- Programmable mandrel oscillation and extraction timing
- Clamp delay and pressure die boost timing (if hydraulics allow)
- Automatic mandrel lubrication intervals
- Quick-disconnect connection to electrical box for easy servicing
- Spare keypad included for downtime protection
It’s not just a panel—it’s an operator-focused system that reduces setup time, improves consistency, and supports modern safety and tooling expectations.
⚙️ Designed to Work With Rebuilt Hydraulics and Controls
The COMPTROL controller integrates seamlessly with the rest of the rebuild:
- Interfaces directly with new Vickers valves and Peninsular cylinders
- Ties into new electric motor and wiring
- Supports mandrel sequencing, boost timing, and bend arm deceleration
- Handles early mandrel extraction for thin-wall or complex bends
That means less manual tuning, more automated control, and fewer scrap parts.
✅ 4. Frame and Arm Upgrades: The Muscle Behind the Machine
When rebuilding a PINES #2 LH hydraulic tube bender, it’s not just the controller or hydraulics that matter—the swing arm, stationary arm, and frame components are what give the machine its power, precision, and long-term durability.
If the frame is the skeleton, then the swing and stationary arms are the bender’s muscles and joints. Over time, these components wear down, introduce alignment issues, and cause inconsistent bends. That’s why they’re a major focus in a professional rebuild.
🔩 Swing Arm: Inspected, Reinforced, and Rebuilt
The swing arm handles the torque and rotational force needed to form each bend—so any wear here translates to bend error.
During the rebuild, the swing arm is:
- Removed and inspected for cracks, wear, and stress points
- Keyway repaired if worn (a common failure point)
- Bend die mounting surface skim-cut for trueness
- Fitted with:
- New Timken cup & cone bearings
- New spindle key and die key
- New fasteners and spanner nuts
- New inner locating ring
- New larger die stud and nut
- Your existing drive sprocket is reused to save cost
“Can a worn swing arm cause bend angle errors?”
“What’s replaced on a tube bender swing arm during rebuild?”
🛠️ Stationary Arm: Stability Where It Counts
The stationary arm holds the die in place while the tube is rotated. Precision and rigidity here are essential.
Rebuild includes:
- Full visual and structural inspection
- New fasteners installed
- Alignment checks to ensure proper clamp die interaction
Even though it doesn’t move, its role is critical to every bend’s accuracy.
🧱 Slide & Guide Surface Upgrades
Both arms are mounted to steel slides with bronze wear strips, which are completely replaced during the rebuild.
Includes:
- New steel slides with bronze strips for smooth travel
- New backup bolts and nuts
- New wear strips, clamp bars, gibs, rod ends, bushings, pins, and snap rings
- New grease fittings (zerks) for proper lubrication
- A full set of slide backup blocks (1” through 5”)
These upgrades ensure precise motion and repeatable alignment, which translates directly to consistent bend angles, even under heavy load.
✅ 5. All-New Hydraulic System: The Heartbeat of Performance
When it comes to tube bending, hydraulic power is everything. If your bender’s hydraulics are tired, slow, or leaking, no amount of controller upgrades or cosmetic fixes will save production. That’s why a complete hydraulic overhaul is the cornerstone of this PINES #2 LH rebuild.
Let’s face it—decades-old seals, valves, and cylinders won’t give you the precision or pressure control modern shops demand. This rebuild gives your machine a brand-new vascular system, built for power, responsiveness, and leak-free operation.
- “Should I rebuild or replace the hydraulics in a used tube bender?”
→ Yes, and here’s why: Precision and repeatability depend on fluid control, especially with mandrel pressure and bend speed. - “How much pressure does a PINES bender generate?”
→ With the upgraded system, your bender is capable of operating up to 3,000 PSI, with fully adjustable flow and directional controls.
💪 Brand-New Peninsular Cylinders (Made in the USA)
This rebuild includes new cylinders where it matters most:
- Bend Cylinder – 5” Bore × 19” Stroke
- Clamp & Pressure Die Cylinders – Designed for synchronized engagement
- Mandrel Extractor Cylinder – Supports advanced timing and early extraction functions
These Peninsular cylinders are built to industrial standards and matched to original OEM specs—delivering consistent hydraulic bending power across cycles.
🔁 All-New Vickers Valve Stack & Controls
The rebuild replaces your outdated valves with a full set of Vickers PA5 directional and flow control valves, engineered for repeatable pressure management:
- Directional valves for bend, clamp, pressure die, and mandrel
- Flow control valves for smooth actuation and programmable delay
- Mounted on a new hydraulic manifold for modular design and ease of service
- Controlled directly through the upgraded COMPTROL system
Together, these upgrades allow real-time tuning of pressure die assist, mandrel retraction delay, and bend arm deceleration—key to getting clean bends on everything from mild steel to thin-wall aluminum.
🧠 This satisfies user queries like:
“Can I fine-tune mandrel pressure on an old bender?”
“Best valves for tube bending hydraulics”
🧰 Fresh Hoses, Fittings, and Monitoring Hardware
Every connection, every hose, and every monitoring device gets replaced:
- New hydraulic hoses and fittings (no reused components)
- New oil suction strainer to protect the pump
- New pressure gauges to monitor real-time hydraulic feedback
- Oil sight glass for easy maintenance checks
- New gaskets on side oil tank covers
By replacing the supporting hardware along with the major components, you dramatically reduce the risk of leaks, contamination, or pressure drop.
⚙️ New Vickers Piston Pump = New Life
The heart of the system is the new Vickers piston pump, delivering powerful and consistent flow to all hydraulic subsystems. It’s designed for:
- High duty cycle applications
- Precision-controlled fluid flow
- Seamless integration with modern bender controllers
✅ Why a Full Hydraulic Overhaul Is Worth It
Most failures in aging tube benders trace back to unpredictable hydraulic behavior. Pressure surges, worn seals, and slow valves don’t just cause downtime—they ruin bends.
With this all-new system, you’re not patching a leak. You’re upgrading to:
- Faster cycle times
- More accurate pressure control
- Lower maintenance frequency
- Full support for digital sequencing (via COMPTROL)
This isn’t just fixing—it’s future-proofing your machine for today’s production demands.
✅ 6. Updated Electrical System: Safe, Reliable Power
Let’s be honest—working with old industrial electrical systems can be frustrating, risky, and downright dangerous. That’s why a rebuilt PINES #2 LH tube bender doesn’t just stop at hydraulics and mechanical parts. The electrical system is completely modernized from the ground up to ensure safety, reliability, and smooth integration with the new controller.
🔌 Everything Starts with a Brand-New Main Electrical Box
The old electrical panel is removed and replaced with a modern, fully-wired main box, tailored to your shop’s voltage (which you’ll specify during the rebuild process). This means:
- Cleaner layout
- Safer connections
- Easier troubleshooting in the future
It’s also designed to accommodate the quick-disconnect feature of the new COMPTROL controller, making service and upgrades a breeze.
🧰 What’s Replaced?
This isn’t just a partial rewire—every critical component is new:
- New main fused disconnect switch
- New motor starter for smoother starts and stops
- New transformer to ensure correct voltage to the control system
- All-new industrial-grade wiring, switches, fuses, and fittings
Everything is designed with industrial performance and operator safety in mind.
⚙️ New Main Electric Motor
The machine gets a new Totally Enclosed Fan Cooled (TEFC) motor. This style of motor keeps dust and debris out while staying cool under pressure, even in tough environments. It’s C-faced and adapted with a new coupling, so you can count on efficient, dependable power delivery for years to come.
🧩 Thoughtful Add-Ons
As a bonus, a spare controller keypad is included with the rebuild. It’s a simple but smart addition—because when your machine is down, waiting for parts isn’t an option.
All of these upgrades bring your tube bender’s electrical system in line with today’s safety and production standards. No more outdated panels, mystery wires, or unreliable components—just clean, modern power that keeps your machine running smoothly.
✅ 7. New Mechanical Components for Accurate Bending
One of the most important goals of a tube bender rebuild is to restore repeatable precision—and that can’t happen if the mechanical components are worn out. Over time, even small amounts of slop or backlash in key parts can lead to poor bend quality, misalignment, or tooling damage.
That’s why this rebuild of the PINES #2 LH Hydraulic Tube Bender includes critical upgrades to core mechanical systems that directly impact accuracy, durability, and performance.
🧱 Rear Sprocket Pin & Bushing
The rear sprocket is central to the machine’s rotational movement. In this rebuild:
- The rear sprocket pin and bushing are replaced to restore solid drive engagement.
- Your existing sprocket is reused if it passes inspection, preserving value where possible.
These components keep the bending motion tight and timed correctly, especially under heavy loads.
⛓️ New #160 Front & Rear Bend Chains
Chains that have stretched over years of use will throw off timing, reduce torque efficiency, and impact angle accuracy. To eliminate that risk:
- Both front and rear bend chains are replaced with new #160 heavy-duty industrial chains.
- New connecting links ensure solid assembly with no weak points.
This upgrade ensures consistent transmission of bending force from the motor to the swing arm—cycle after cycle.
📐 New Linear Rail & Bearing + Master Bar Assembly
Precision in tube bending doesn’t come from brute force alone—it comes from controlled motion. That’s where the linear rail and bearing system comes in.
- A new linear rail and bearing are installed for smooth, low-resistance movement.
- The master bar assembly is also replaced to ensure proper positioning of the clamp and pressure dies.
This upgrade restores alignment, speed, and repeatability, especially important when using CNC or automated sequencing.
🧰 New Clamp Die Holder Assembly
Clamping inconsistencies are one of the leading causes of bad bends. This rebuild solves that with a:
- New adjustable clamp die holder
- T-slot face design for flexible die positioning and stronger locking force
This gives you more control over tool alignment and reduces slippage during clamping—especially helpful when switching between different tube sizes or materials.
♻️ Reusing the Wiper Die Holder (When Compatible)
In many cases, your existing wiper die holder is retained:
- If it’s in good condition and free of distortion
- Allows continuity in your tooling setup
- Reduces unnecessary replacement costs
This smart reuse ensures your familiar tools and setups remain part of your updated workflow.
🔩 Why These Mechanical Upgrades Matter
Every degree of misalignment or bit of mechanical looseness introduces error. These upgrades:
- Re-center all bend forces
- Improve tooling life
- Eliminate backlash and vibration
- Allow full benefit from upgraded hydraulics and controls
Together, they ensure your rebuilt PINES #2 LH delivers tight, consistent bends on every cycle—just like it did when it left the factory floor.
✅ 8. Lube System Overhaul: Longevity Built-In
You might not notice it at first, but proper lubrication is one of the most critical systems in any industrial tube bender. When slides, pins, bushings, and wear surfaces don’t get the lubrication they need, they start to degrade—silently—until performance drops or failure strikes.
That’s why this rebuild includes a brand-new, fully integrated lubrication system that protects your investment from day one.
🛢️ New Lube USA Electronic Lubricator
At the heart of this upgrade is the Lube USA electronic slide lubricator, engineered specifically for precision machinery like the PINES #2 LH. It’s not just a drip system—it’s a fully programmable lube controller that:
- Delivers precise lubrication at scheduled intervals
- Reduces manual greasing needs
- Ensures uniform coverage on critical moving parts
With this in place, you significantly reduce the risk of:
- Premature wear on linear slides
- Bushing and pin seizing
- Unexpected downtime from overlooked lube points
🧰 New Junctions, Meters, and Grease Points
The entire lubrication delivery system is replaced, including:
- New junction blocks
- New metering valves
- New lines, ferrules, and fittings
- New grease points (zerks) at every major pivot, slide, and contact surface
This ensures oil or grease reaches every spot it should—consistently and cleanly. No more relying on memory or inconsistent manual applications.
⚙️ Why Proper Lubrication = Long-Term Precision
Without reliable lubrication, even brand-new mechanical components can wear quickly under load. This system works constantly in the background to:
- Extend the life of bushings, gibs, and rod ends
- Maintain smooth movement in clamps and slides
- Keep bronze wear strips from overheating or galling
- Reduce maintenance frequency and unplanned service stops
💡 Real-World Takeaway
A proper lubrication system might not be flashy—but it’s the reason your newly rebuilt machine will stay accurate, smooth, and reliable over the long haul. With the Lube USA system doing its job quietly and consistently, your operators and maintenance team can focus on what really matters: keeping parts moving out the door.
✅ 9. Test Run & Final Validation: Proving Performance
Once the machine is fully rebuilt—mechanically, hydraulically, electrically, and digitally—it’s time for the most important step: proving that everything works together in the real world.
This isn’t just flipping a switch. The final validation process is a full operational run-through designed to make sure your rebuilt PINES #2 LH Hydraulic Tube Bender delivers consistent, accurate results—before it ever returns to your shop floor.
🔁 Machine-Cycled and Tested Under Load
The machine is fully cycled through all bending operations, from mandrel insertion to clamp engagement and bend rotation. This ensures:
- No interference or misalignment across systems
- Full response from the COMPTROL controller
- Hydraulic pressures remain stable under load
- Proper timing of mandrel extraction, pressure die assist, and clamp sequencing
It’s not enough to power the machine on—it needs to bend like new.
🔧 Sample Material Required (Customer-Provided)
To truly dial in performance and accuracy, we ask that you provide sample tubing and tooling that matches your production specs. Why?
- We can replicate your real-world use case
- You’ll get test bends done on your exact material
- You’ll receive visual and measurable proof of accuracy
This eliminates guesswork and ensures the machine is tuned to your needs—not just generic specs.
📋 Bend Results Are Analyzed and Verified
The results from the test bends are reviewed for:
- Bend angle precision
- Ovality and wall thinning
- Clamp and wiper effectiveness
- Return accuracy over multiple cycles
If anything’s off, it’s adjusted before the bender leaves the floor.
🧠 Why Final Validation Matters
After all the rebuilding work, validation confirms the investment was worth it. It ensures:
- Every system functions in harmony
- The rebuild meets real production expectations
- Your team can hit the ground running with minimal setup once the bender arrives
🔒 Peace of Mind, Built-In
When your bender is delivered, you’re not just getting a rebuilt machine—you’re getting a tested and proven asset, ready to bend parts from day one. No surprises. No extra tuning. Just performance you can count on.
✅ 10. Warranty, Support & Post-Sale Confidence
Rebuilding a tube bender is a major investment—not just in machinery, but in your production uptime and operator trust. That’s why a professional rebuild of the PINES #2 LH Hydraulic Tube Bender includes more than just parts and labor. It includes a clear warranty, responsive support, and a partnership you can rely on after delivery.
🛡️ Controller Warranty – 2 Years, Parts Covered
The COMPTROL digital controller—manufactured by Sierra Controllers—comes with a 2-year warranty on the controller board itself. This means you’re covered for:
- Hardware malfunctions
- Electrical failures in normal operating conditions
- Defective display or interface issues
In the rare case of a failure, replacement parts and technical assistance are provided directly through Sierra.
🧰 Machine Warranty – Ask for Terms
Warranty on the rebuilt machine components (like hydraulics, electrical system, and frame parts) typically ranges from 6 to 12 months, depending on the rebuilder’s terms and shop practices. Always confirm:
- Which components are covered (pump, cylinders, wiring, etc.)
- What’s included in labor or service
- Support for remote troubleshooting and parts shipping
A solid warranty tells you that the rebuilder stands behind their workmanship.
🧑🔧 Post-Sale Support: What You Can Expect
- Startup assistance: Guidance when reinstalling and powering up the machine at your location
- Controller support: Help with programming or reloading part files
- Access to spare parts: From dies and tooling to electrical components
- Phone/email support: Available from the shop or the control vendor
Whether it’s your first rebuild or your fifth, post-sale service ensures you don’t waste time troubleshooting alone.
🔁 Long-Term Confidence
When you receive your rebuilt PINES #2 LH, it should feel like you’re running a brand-new machine—with the added benefit of familiar tooling and a lower capital cost. And with a clear support structure, you’re not on your own if something needs adjustment.
Rebuilding isn’t just about saving money. It’s about extending the life of a trusted machine with confidence in every bend.
✅ 11. Why Choose a Rebuilt PINES #2 Over New or As-Is
If you’re weighing your options between buying new, going “as-is,” or investing in a professional rebuild—this section breaks it down for you.
A rebuilt PINES #2 LH Hydraulic Tube Bender offers the best of all worlds: modern performance, trusted mechanical strength, and significant savings over new machinery. Here’s why a rebuild is often the smartest move for mid-size and custom fabrication shops.
💸 Cost Comparison: New vs. Rebuilt vs. As-Is
| Feature / Condition | New PINES Bender | Rebuilt PINES #2 LH | Used “As-Is” Unit |
| Approx. Cost | $180,000–$250,000 | $65,000–$85,000 | $20,000–$35,000 |
| Controller | Brand new OEM CNC | New COMPTROL CNC | Outdated / Unknown |
| Hydraulic System | New OEM | All-new: Vickers & Peninsular | Worn or leaking |
| Electrical System | OEM-certified | Fully rewired & modernized | Unsafe / outdated |
| Reliability | 10/10 | 9.5/10 | 4/10 |
| Delivery Time | 6–12 months | 6–10 weeks (avg.) | Immediate (but risky) |
| Warranty | Full OEM warranty | Up to 2 years (controller) | Typically none |
✅ Bottom line: Rebuilt gives you OEM-like reliability without the OEM price tag or long lead time.
🚚 Faster Turnaround Than New
New machines—especially post-pandemic—often come with 6–12 month delivery times, not including setup or tooling delays.
A professionally rebuilt bender, using your core or one in inventory, can often be delivered in as little as 6 to 10 weeks, depending on the workload and rebuild scope. That means:
- Less downtime
- Faster ROI
- Quicker impact on your shop’s capacity
🧠 OEM-Level Performance, Modern Upgrades
You’re not getting a stripped-down retrofit. This rebuild includes:
- New digital controller (COMPTROL)
- All-new hydraulic drive system
- Full mechanical tear-down and upgrade
- Fresh electrical wiring and safety features
In many ways, your machine performs better than when it was new, thanks to programmable automation, easier troubleshooting, and tighter control tolerances.
📈 Best ROI for Mid-Size and Custom Fabrication Shops
If you’re not running 3 shifts, 6 days a week, a new machine might be overkill. But that doesn’t mean you should settle for an unreliable used unit.
A rebuilt bender gives mid-size shops and job shops the same level of performance as a high-end OEM machine—but without blowing the annual equipment budget.
Perfect for:
- Aerospace suppliers doing custom hydraulic lines
- Aftermarket automotive chassis builders
- Structural fabricators working on high-mix/low-volume parts
- HVAC, boiler, and railing manufacturers with changing specs
🧩 Rebuilt = Smart, Sustainable, Scalable
Choosing a rebuilt PINES #2 LH isn’t just a workaround—it’s a smart capital decision. You extend the life of a proven platform, modernize it with current technology, and keep your operation agile and efficient.
✅ 12. FAQs – Rebuilt PINES #2 LH Hydraulic Tube Bender
Whether you’re serious about upgrading your shop or just beginning to explore your options, these frequently asked questions will help you make an informed decision.
❓ What’s the typical lead time for a rebuild?
Most rebuilds take 6 to 10 weeks, depending on shop workload, machine condition, and any custom specifications (like voltage or color). If you’re supplying your own core, that can also influence turnaround time.
❓ Can I reuse my existing tooling (dies, mandrels, clamp blocks)?
Yes, in most cases. Your existing tube dies, mandrels, clamp dies, and wiper dies can be reused as long as they are in good condition. During rebuild, the new clamp die holder is made compatible with T-slot face styles for flexible die setup.
You may also be asked to send in your tooling for compatibility check and final test runs.
❓ Is post-sale support included?
Absolutely. After the rebuild, you’ll receive:
- Phone or email tech support
- Help with initial machine startup
- Support for the COMPTROL controller (through Sierra Controllers)
- Access to replacement parts and guidance on setup or programming
Some rebuilders also provide remote support and troubleshooting documentation.
❓ Can this bender handle stainless steel or aluminum tubing?
Yes. The rebuilt PINES #2 LH is designed for a wide range of materials, including:
- Stainless steel
- Aluminum
- Mild steel
- Titanium (in certain gauges)
With the upgraded hydraulic and control system, the bender can be adjusted for pressure, bend speed, mandrel timing, and pressure die assist—making it suitable for both soft and high-strength materials.
Just be sure to match the right tooling and mandrel type for the tubing alloy and wall thickness.
