Description
YM4P.83.06a Hydraulic Cylinder
63mm Bore ?? 40mm Rod ?? 1425mm Stroke
The Ever-power YM4P.83.06a is engineered for precision hydraulic actuation in demanding material handling environments. Its 63mm bore diameter paired with a 40mm induction-hardened rod delivers reliable force transmission across the full 1425mm stroke envelope.
YM4P.83.06a
63 mm
40 mm
1425 mm
1780 mm
Ever-power is recognized as a leading hydraulic cylinder manufacturer serving OEMs and distributors across 40+ countries.
Product Overview
The YM4P.83.06a is manufactured for OEMs who refuse to compromise. The 63mm bore is honed to H8 tolerance, creating ideal surface for piston seals. The 40mm rod undergoes induction hardening plus 20-micron chrome deposition, producing HV 900+ hardness resisting pitting in warehouse and construction environments. The balanced 63mm/40mm geometry optimizes extend/retract force differentials.
Installation requires verifying the 1425mm stroke matches your steering linkage geometry and that mounting pin centers align within ??2mm of specification. Proper hose routing with adequate bend radius prevents port stress and premature fitting failure. Ever-power provides installation guides with torque specifications for all threaded connections.
Key Features
Precision-Honed Barrel
The 63mm bore receives precision honing to H8 tolerance with cross-hatch surface pattern. This optimizes lubricant film retention and minimizes seal wear during high-cycle steering operations in demanding warehouse and distribution environments where reliability directly impacts operational uptime.
Hard Chrome Rod
The 40mm rod carries ??20??m hard chrome plating achieving HV 900+ surface hardness. This resists corrosion and abrasion from airborne contaminants, cleaning chemicals, and temperature fluctuations common in industrial material handling operations worldwide.
Triple-Barrier Seals
Three-stage architecture employs PTFE-bronze wiper to exclude contamination, polyurethane U-cup for dynamic pressure sealing, and NBR O-ring for static gland sealing. This combination delivers bidirectional leak-free performance across temperature extremes from -30??C to +100??C.
Full Pressure Testing
Every production unit undergoes hydrostatic testing at 1.5?? working pressure with minimum 60-second hold time and zero leakage acceptance criteria. Test pressure and duration exceed ISO 10771 requirements for hydraulic fluid power cylinders.
Our single acting hydraulic cylinder expertise ensures every unit exceeds OEM benchmarks at lower lifecycle cost.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | YM4P.83.06a |
| Bore | 63.0 mm |
| Rod | 40.0 mm |
| Stroke | 1425.0 mm |
| Mount | 1780.0 mm |
| Work Pressure | 25 MPa |
| Test Pressure | 37.5 MPa |
| Burst | 62.5+ MPa |
| Temp Range | -30??C to +100??C |
| Fluid | Mineral Oil |
| Barrel | 27SiMn Seamless |
| Rod Surface | Hard Chrome 20+??m |
| Mounts | Pin Eye / Clevis |
| Ports | G1/4 or M14x1.5 |
Working Principle
The YM4P.83.06a operates as a double-acting linear actuator. During extension, pressurized fluid enters the cap-end port acting on the full 63mm bore area. The resulting force extends the 40mm rod to 1425mm stroke. During retraction, fluid shifts to the rod-end port; the annular area generates pull force against return loads. A meter-out valve regulates speed while the relief valve limits pressure.
Applications
The YM4P.83.06a is purpose-built for forklift steering systems where precise angular control and rapid response are non-negotiable. Its 63mm bore generates torque to pivot steer wheels through full arc, even when stationary and loaded. Narrow-aisle warehouses benefit from consistent steering feel reducing operator fatigue during long shifts. The unit also suits AGVs where repeatability determines navigation accuracy along defined paths. Marine terminal operations and cold storage facilities particularly value the responsive steering and low-temperature seal performance.
Brand Compatibility
This 63mm bore cylinder directly replaces OEM actuators on Yale, Mitsubishi, and TCM forklift series. Ever-power maintains a dimensional database cross-referencing over 2,000 OEM part numbers ensuring physical and hydraulic compatibility without machine modification. Fleet managers running mixed-brand operations appreciate inventory consolidation ?? one Ever-power part number replaces multiple OEM references while maintaining OEM-level performance and reliability in demanding shift work.
Explore our resource on industrial hydraulic cylinders for installation tips and maintenance.
Customization Options
Beyond the standard 63mm ?? 40mm ?? 1425mm, Ever-power offers engineering to modify this cylinder for unique installations. Our team reviews drawings and delivers tailored solutions in 10-15 business days.
Stroke
Extended/reduced from 1425mm. Max depends on 40mm rod buckling.
Ports
BSPP, NPT, SAE in side, rear, or manifold orientations.
Rod End
Male/female threads, spherical bearings, clevis forks.
Seals
Viton for heat, PU for abrasion, PTFE for low friction.
Manufacturing & Quality
Manufacturing begins with material inspection ?? 27SiMn steel at 520MPa yield verified. CNC turning machines shape the 63mm barrel OD and cap threads to H8. Honing produces the critical bore finish. Pistons are CNC’d from ductile iron with PTFE bands, assembled in Class 1000 cleanroom. Every cylinder pressure-tested at 1.5?? rating for 60 seconds.
Material
63mm barrel, mill certs
CNC
63mm bore honed H8
Chrome
Rod ??20??m, HV900
Assembly
Cleanroom, torqued
Test
1.5??, 60s hold
CMM
Dimensional report
How to Select the Right Hydraulic Cylinder
Specifying the correct hydraulic cylinder requires matching physical dimensions, force requirements, and environmental conditions. For the 63mm bore, 40mm rod, 1425mm stroke, and 1780mm mounting distance of your application, verify each parameter systematically against your equipment drawings and operating specifications to ensure proper fit and function.
- Verify Bore Diameter
The 63mm bore produces 62N at 20 MPa. Measure existing bore or calculate from system pressure and required force. Ensure the bore matches your hydraulic pump output and valve capacity. - Confirm Rod Diameter
The 40mm rod must withstand side loads from steering linkage. Verify rod end threads match knuckle arm. Check chrome surface is free of scoring that would damage seals during operation. - Measure Stroke Length
Measure full linear travel from retracted to extended. The 1425mm stroke must equal or exceed this distance. Consider internal cushioning requirements for smooth deceleration.
Structural Components
The 63mm barrel forms the pressure vessel from seamless 27SiMn tubing with honed interior serving as piston bearing surface. End caps are precision-threaded steel forgings containing inlet ports and attachment points. Inside, the ductile iron piston with PTFE wear rings divides the barrel into two pressure chambers. The 40mm rod extends through the gland combining wiper seal, rod seal, and bearing sleeve. Static O-rings seal barrel-to-cap joints; threading rather than welding enables future rebuild.
Cylinder Barrel
63mm honed seamless 27SiMn steel, H8 tolerance
Piston Rod
40mm hard chrome plated, HV??900, Ra 0.4??m
Piston
Ductile iron with PTFE wear bands
Gland
Threaded cartridge: seal, bearing, retention
Ever-power Technical Deep Dive
Performance Boundaries
The 63mm bore YM4P.83.06a sustains 28 MPa ?? 12% above rating ?? across 250,000 cycles with seal integrity. The 40mm rod deflects less than 0.03mm per 100mm unsupported. Thermal imaging shows barrel stabilization at 45??C above ambient.
Frequently Asked Questions
Pressure rating of YM4P.83.06a?
Rated 25 MPa continuous, 37.5 MPa test pressure. Burst margin exceeds 2.5?? working pressure. The 63mm barrel is 27SiMn steel at 520 MPa yield.
Seal life on 40mm rod?
Under normal steering duty (10-20 cycles/hour, clean oil, 40-60??C), seals last 4,000-6,000 hours. Contaminated fluid or extreme temps reduce by 50%. Seal kits available.
Water-glycol compatible?
Yes ?? specify PU seals at order. The 40mm rod chrome handles up to 55% glycol. Keep below 50??C to prevent vapor formation.
Weight of 1425mm stroke unit?
Approximately 15.0 kg for standard 63mm bore, 40mm rod, 1425mm stroke with pin-eye mounts. Heavy-wall adds 15-20%.
Get Your Quote Today
Ready to upgrade with the YM4P.83.06a? Request quotation today. Volume discounts for 10+ units, samples for qualification testing. Lead time 2-3 weeks; express available.
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