Description
103631-00 Hydraulic Cylinder
63mm Bore ?? 40mm Rod ?? 160mm Stroke
The 103631-00 cylinder features a seamless steel construction with a 63mm precision-honed bore and a 40mm rod finished to Ra 0.4??m. Its 160mm stroke capacity makes it the ideal replacement for aging OEM steering actuators.
103631-00
63 mm
40 mm
160 mm
385 mm
Choose Ever-power custom hydraulic cylinders for ISO-certified production and comprehensive engineering.
Product Overview
The 103631-00 is designed for rebuildability. When the 63mm bore shows wear, re-hone to next oversize with new seal kit. The 40mm rod can be re-chromed. Wear parts are available as spares reducing lifetime cost by up to 60%. The generous 40mm rod provides exceptional column strength resisting buckling under load.
For extreme environment applications ?? whether arctic cold stores, tropical humidity, or dusty construction sites ?? Ever-power offers specialized surface treatments and seal compounds that extend service life beyond standard configurations by up to 200% in accelerated life testing.
Key Features
Corrosion Protection
The barrel receives zinc-phosphate conversion coating prior to painting for enhanced adhesion and corrosion resistance. The 40mm rod chrome plating passes 96-hour neutral salt spray testing per ASTM B117, ensuring reliable outdoor performance in marine and chemically aggressive environments.
Flexible Porting Options
BSPP, NPT, or metric port threads are available in side, rear, or flange mounting orientations. This flexibility allows direct connection to existing hydraulic plumbing without adapter fittings, custom hose configurations, or line routing modifications.
Custom Rod End Fittings
Male and female threads, spherical bearings, clevis forks, or special end fittings are fabricated to customer dimensional drawings and validated load requirements. Custom configurations ship within 10-15 business days from drawing approval.
Export-Grade Packaging
VCI corrosion protection film, silica gel desiccant, and ISPM-15 certified plywood crating ensure damage-free international delivery. Packaging withstands ocean transit periods up to 45 days and multiple handling transitions through port and customs facilities.
Ever-power hydraulic cylinder manufacturer expertise reduces downtime for demanding industrial applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 103631-00 |
| Bore Dia | 63.0 mm |
| Rod Dia | 40.0 mm |
| Stroke | 160.0 mm |
| Mounting | 385.0 mm |
| Max Pressure | 25 MPa |
| Hydro Test | 37.5 MPa |
| Burst Min | 62.5+ MPa |
| Operating Temp | -30??C to +100??C |
| Medium | Mineral Oil |
| Tube Material | 27SiMn Seamless |
| Chrome Layer | Hard Chrome 20+??m |
| Fixing Type | Pin Eye / Clevis |
| Port Size | G1/4 or M14x1.5 |
Working Principle
At system level, the 103631-00 is one component in a hydrostatic loop. The priority divider diverts pump output to the cylinder circuit. Oil enters the 63mm barrel pushing the piston sealed by polymer rings. The 40mm rod extends through the gland, its chrome surface preventing leakage across 160mm range. The orbitrol valve provides proportional response ?? small wheel movements produce small displacements.
Applications
In forklift steering, the 103631-00 replaces OEM cylinders on 1.5-ton to 5-ton capacity classes. The 63mm bore matches standard steering pump output ensuring compatible flow and pressure. Cold storage facilities value low-temperature seal performance where conventional units harden and leak. Port operations deploy this on reach stackers and straddle carriers where steering reliability directly impacts container throughput and vessel turnaround times.
Brand Compatibility
OEM-grade specifications ensure seamless integration with Hyundai hydraulic systems at standard flow and pressure parameters. Rod end threads and gland dimensions match original components on Toyota and Komatsu 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 single acting hydraulic cylinder 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 160mm, mounting 385mm ?? 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 385mm, retracted 225mm, extended 385mm ?? 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
Global Markets
Ever-power distributes 63mm bore cylinders through 35 distributors in 42 countries with warehouses in Rotterdam, Dubai, Singapore, and Chicago. A remanufacturing program at 40% of new cost supports circular economy goals with identical warranty coverage.
Frequently Asked Questions
Sub-zero operation?
Standard NBR to -30??C. LT-NBR for -30??C to -40??C. Silicone/HNBR below -40??C. Barrel stays ductile to -50??C. Warm up system before full demand.
Prevent rod corrosion outdoors?
Specify nickel-chrome duplex (96hr salt spray), ceramic coating (500+ hr), or rod boot. Apply corrosion inhibitor for stationary periods.
Port size for 63mm bore?
Standard G1/4 BSPP or M14??1.5. Requires ~49.0L per cycle. At 10-20 L/min pump flow, extension is 1-2 seconds. G3/8 or SAE-6 for higher flow.
Repairable or disposable?
Fully repairable ?? threaded construction allows disassembly for re-honing, re-chroming, seal replacement. Rebuild kits at 30-40% of new. Factory reman available with 12-month warranty.
Get Your Quote Today
Request a sample 103631-00 for side-by-side comparison. The 63mm bore ?? 40mm rod geometry is validated across thousands of installations.
Ever-power Cylinder Co. | Quality Assured | Ships Globally | 103631-00
