Description
nan Hydraulic Cylinder
63mm Bore ?? 40mm Rod ?? 385mm Stroke
The nan from Ever-power represents the convergence of precision metallurgy and hydraulic engineering. A 63mm honed cylinder barrel works in concert with a 40mm hard-chrome rod to deliver consistent performance across 385mm of linear travel.
nan
63 mm
40 mm
385 mm
670 mm
Ever-power is recognized as a leading hydraulic cylinder manufacturer serving OEMs and distributors across 40+ countries.
Product Overview
Fleet operators find the nan compelling: premium specs at aftermarket pricing. The 63mm ?? 40mm combination physically interchanges with dozens of OEM part numbers while potentially exceeding their original performance. The balanced 63mm/40mm 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 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.
Ever-power single acting hydraulic cylinder expertise reduces downtime for demanding industrial applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | nan |
| Bore | 63.0 mm |
| Rod | 40.0 mm |
| Stroke | 385.0 mm |
| Mount | 670.0 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 nan 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 385mm 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 nan 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
OEM-grade specifications ensure seamless integration with Lonking hydraulic systems at standard flow and pressure parameters. Rod end threads and gland dimensions match original components on JAC and Linde steer axles, eliminating adapter fittings. Technical datasheets with full dimensional drawings are available for engineering verification and BOM approval before purchase commitment.
Learn about hydraulic optimization in our industrial hydraulic cylinders article.
Customization Options
For volume OEMs, Ever-power provides dedicated engineering to adapt this platform. Development includes 3D modeling, FEA analysis, prototype production, and validation testing.
Mounts
Custom brackets, valve manifolds, dual-eye configs.
Speed
Built-in cushions, meter-out orifices, flow controls.
Sensors
Magnetic piston for reed switch or Hall effect.
Coding
OEM paint colors, laser marking for 63mm bore cylinders.
Manufacturing & Quality
ISO 9001 facility with SPC monitoring. Twin-spindle CNC machines both end bores for 0.05mm concentricity. Chrome verified at 8 points by XRF (20??m min). Positive-pressure assembly. Final test to 37.5 MPa with joint inspection.
Receipt
Mill test reports
Machining
CNC, twin-spindle
Surface
XRF chrome check
Clean Asm
Positive air pressure
Hydrotest
37.5 MPa gradual
Final QC
Dimensional, visual
How to Select the Right Hydraulic Cylinder
The selection process balances hydraulic system capability with mechanical constraints. Verify these parameters against equipment specs ?? bore 63mm, rod 40mm, stroke 385mm, mounting 670mm ?? considering duty cycle, fluid type, temperature range, and contamination exposure in your application.
- Calculate Forces
Extension: 62N. Retraction: 37N at 20 MPa. Verify these exceed application loads including safety margins for peak conditions. - Check Envelope Dimensions
Mounting 670mm, retracted 285mm, extended 670mm ?? verify against equipment clearances. Rod end must mate with steering linkage without modification. - Evaluate Environment
Temperature range, fluid type, duty cycle, contamination exposure determine seal selection and surface treatment for this 63mm bore cylinder in your specific conditions.
Structural Components
The 63mm barrel serves as pressure vessel and bearing housing ?? honed Ra 0.4??m eliminates separate liner need. End caps provide porting, mounting, and seal retention; torqued with anaerobic sealant against vibration loosening. The floating piston carries the polyurethane U-cup and two bronze-filled PTFE guide bands distributing side loads. The 40mm chrome rod exits through the head-end gland where triple-seal arrangement maintains zero leakage. Vent holes prevent pressure trapping behind the rod seal.
Piston
Ductile iron with PTFE wear bands
Gland
Threaded cartridge: seal, bearing, retention
End Caps
Steel forgings, CNC-machined, ported
Seal System
Multi-lip PU/NBR, self-energizing
Ever-power Technical Deep Dive
Certifications
Ever-power operates under ISO 9001:2015 certified by T??V Rheinland. Pressure testing follows ISO 10771:2015. The 40mm rod chrome meets RoHS 2011/65/EU. Full lot tracking links mill heat numbers to finished cylinder serial numbers.
Frequently Asked Questions
Pressure rating of nan?
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 385mm stroke unit?
Approximately 5.0 kg for standard 63mm bore, 40mm rod, 385mm stroke with pin-eye mounts. Heavy-wall adds 15-20%.
Get Your Quote Today
Need 63mm bore cylinders fast? Strategic inventory of 40mm rod configs for immediate shipment. Custom specs in 15 business days.
Ever-power Cylinder Co. | Quality Assured | Ships Globally | nan
