Description
MEZ504??55??016-3 Hydraulic Cylinder
63mm Bore ?? 30mm Rod ?? 142mm Stroke
The MEZ504??55??016-3 from Ever-power represents the convergence of precision metallurgy and hydraulic engineering. A 63mm honed cylinder barrel works in concert with a 30mm hard-chrome rod to deliver consistent performance across 142mm of linear travel.
MEZ504??55??016-3
63 mm
30 mm
142 mm
362 mm
Ever-power is recognized as a leading hydraulic cylinder manufacturer serving OEMs and distributors across 40+ countries.
Product Overview
Fleet operators find the MEZ504??55??016-3 compelling: premium specs at aftermarket pricing. The 63mm ?? 30mm combination physically interchanges with dozens of OEM part numbers while potentially exceeding their original performance. The balanced 63mm/30mm geometry optimizes extend/retract force differentials.
Ever-power offers comprehensive technical support including system sizing calculations, failure mode analysis, and on-site troubleshooting for qualified OEM partners. Application engineering services are available at no charge for orders exceeding 50 units annually.
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 30mm 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.
This demonstrates why Ever-power is preferred for single acting hydraulic cylinder among fleet operators.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | MEZ504??55??016-3 |
| Bore | 63.0 mm |
| Rod | 30.0 mm |
| Stroke | 142.0 mm |
| Mount | 362.0 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 MEZ504??55??016-3 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 30mm rod to 142mm 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 MEZ504??55??016-3 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
Engineered for interchangeability, this unit matches mounting envelope, port geometry, and force characteristics of factory cylinders on Doosan material handling equipment. Pin-eye and clevis dimensions conform to OEM specifications used by Hyundai and Toyota, allowing direct bolt-on replacement without adapters or bracket modifications. Aftermarket distributors stock this as a universal solution for Komatsu forklift families commonly found in rental and leasing fleets requiring rapid turnaround.
Visit our industrial hydraulic cylinders page for documentation and troubleshooting guides.
Customization Options
Ever-power’s program addresses that no two OEM installations are identical. Whether non-standard 63mm bore, specialized rod end, or alternative sealing, our engineers develop cost-effective solutions.
Material
Stainless barrel for corrosion, alloy upgrades for 30mm rod.
Surface
Nickel-chrome duplex, ceramic, phosphate, marine paint.
Temp
Low-temp NBR to -40??C, Viton to +150??C.
Testing
Extended cycling, salt spray, custom acceptance criteria.
Manufacturing & Quality
Lean workflow through machining, finishing, assembly, test. Seamless tubing CNC-turned. Diamond abrasives achieve cross-hatch on 63mm bore. Rods centerless ground, chrome-plated, eddy-current inspected. Torque-monitored assembly. Static hold, dynamic cycling, over-pressure verification.
Steel In
27SiMn, 520MPa cert
Turning
63mm bore, H8 finish
Surface
Hard chrome, 20??m+
Build
Seals, PTFE bands
Verify
Pressure, zero leak
Measure
CMM all critical dims
How to Select the Right Hydraulic Cylinder
Selecting a replacement cylinder involves evaluation of multiple interdependent parameters. Use this framework to confirm the 63mm ?? 30mm ?? 142mm unit with 362mm mounting suits your equipment. Each parameter affects performance, installation compatibility, and service life in your specific operating environment.
- Check Mounting Dimensions
Center-to-center between pins must match 362mm ??2mm. Verify pin diameter compatibility. Check hose and fitting clearance at full extension without interference. - Pressure Compatibility
Confirm system operates at ??25 MPa with this 63mm bore. Verify pump flow produces acceptable extension/retraction speed for your steering response requirements. - Specify Seal Material
Standard NBR suits mineral oil at -30??C to +100??C. Select Viton for synthetic fluids or temps above 100??C. Specify PU for water-glycol mixtures at order time.
Structural Components
The 63mm barrel is the largest structural element, thick-wall seamless steel containing 25 MPa with 4:1 safety factor. The cap-end houses the inlet port and rear mounting ?? pin-eye or clevis lug machined integrally. The piston incorporates seal grooves and wear bands centering it within the 63mm bore. The 30mm rod resists axial tension and compression; hard chrome seals against the gland and withstands environmental exposure. The threaded rod gland integrates sealing, bearing, and retention in a replaceable cartridge.
Piston Rod
30mm hard chrome plated, HV??900, Ra 0.4??m
Piston
Ductile iron with PTFE wear bands
Gland
Threaded cartridge: seal, bearing, retention
End Caps
Steel forgings, CNC-machined, ported
Ever-power Technical Deep Dive
Smart Manufacturing
The 63mm bore production line uses OPC-UA connected MES with real-time OEE dashboards. AGVs move WIP between stations. Machine vision inspects at 50??m resolution. Predictive maintenance reduced downtime 45% and improved Cpk from 1.33 to 1.67.
Frequently Asked Questions
Pressure rating of MEZ504??55??016-3?
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 30mm 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 30mm rod chrome handles up to 55% glycol. Keep below 50??C to prevent vapor formation.
Weight of 142mm stroke unit?
Approximately 3.0 kg for standard 63mm bore, 30mm rod, 142mm stroke with pin-eye mounts. Heavy-wall adds 15-20%.
Get Your Quote Today
Need 63mm bore cylinders fast? Strategic inventory of 30mm rod configs for immediate shipment. Custom specs in 15 business days.
Ever-power Hydraulics | ISO Certified | Export Worldwide | Ref: MEZ504??55??016-3
