Description
25/5134221 Hydraulic Cylinder
50mm Bore ?? 25mm Rod ?? 232mm Stroke
When your steering system demands absolute reliability, the Ever-power 25/5134221 answers with a robust 50mm bore, a 25mm chrome-plated rod rated for harsh environments, and a precisely calibrated 232mm stroke.
25/5134221
50 mm
25 mm
232 mm
385 mm
As a trusted single acting hydraulic cylinder, Ever-power delivers actuators that meet OEM specifications for material handling.
Product Overview
Hydraulic designers specify Ever-power for the 25/5134221 class because critical dimensions are tightly held. The 50mm bore uses plateau honing for optimal oil retention. The 25mm rod chrome is porosity-tested per ASTM B456. The compact 50mm bore generates sufficient steering force for light-to-medium forklifts.
Environmental considerations are addressed through RoHS-compliant materials, recyclable packaging, and a cylinder exchange program that remanufactures returned units at 40% of replacement cost. This circular approach reduces waste while maintaining OEM-equivalent performance and warranty coverage.
Key Features
Seamless Construction
Machined from 27SiMn seamless alloy tubing, the 50mm barrel eliminates the stress riser inherent in welded pipe construction. This provides superior fatigue resistance through millions of steering cycles under varying pressure amplitudes and directional loading conditions.
Micro-Finished Rod
The 25mm piston rod is centerless ground to Ra 0.4??m before hard chrome plating. This surface finish ensures concentric operation that extends seal life by reducing lip wear, friction heat generation, and breakout pressure during steering corrections.
Temperature Resilience
Nitrile primary seals maintain elastomeric properties from -30??C to +100??C standard operating range. Viton compound upgrades are available for continuous operation above 80??C or for compatibility with synthetic hydraulic fluids and phosphate ester media.
Complete Traceability
Material certification with mill test reports accompanies every cylinder. Serialized batch codes etched on the barrel enable complete production history retrieval from raw steel billet through final inspection and pressure testing verification.
Ever-power industrial hydraulic cylinders expertise reduces downtime for demanding industrial applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 25/5134221 |
| Bore Dia | 50.0 mm |
| Rod Dia | 25.0 mm |
| Stroke | 232.0 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
The 25/5134221 converts hydraulic power into linear steering motion. The pump sends flow through a priority valve ensuring the steering circuit receives volume even when lift and tilt demand simultaneously. Fluid enters the 50mm bore, displacing the piston. The 25mm chrome rod translates pressure through 232mm travel. On return, fluid exits to the reservoir via filter. Cushions decelerate the piston near stroke end.
Applications
In forklift steering, the 25/5134221 replaces OEM cylinders on 1.5-ton to 5-ton capacity classes. The 50mm 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 TCM hydraulic systems at standard flow and pressure parameters. Rod end threads and gland dimensions match original components on Heli and Hangcha 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 custom 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 50mm 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 50mm, rod 25mm, stroke 232mm, mounting 385mm ?? considering duty cycle, fluid type, temperature range, and contamination exposure in your application.
- Calculate Forces
Extension: 39N. Retraction: 29N at 20 MPa. Verify these exceed application loads including safety margins for peak conditions. - Check Envelope Dimensions
Mounting 385mm, retracted 153mm, 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 50mm bore cylinder in your specific conditions.
Structural Components
The 50mm 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 25mm 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 50mm 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
OEM direct replacement?
Yes ?? the 25/5134221 interchanges with popular OEM 50mm bore cylinders. Dimensions, ports, and rod ends match factory specs. Cross-reference charts available.
Rod maintenance required?
Minimal ?? wipe chrome weekly, inspect monthly for scoring. Apply hydraulic oil for long storage. Replace wiper if torn. Never paint chrome.
Custom 232mm stroke available?
Absolutely ?? 50mm to 2,000mm for this 50mm bore. Engineering review for rod stability. No minimum quantity. Feasibility in 24 hours.
Warranty for 25/5134221?
12 months against material and workmanship defects. Covers seals, barrel, chrome, threads under normal use. Excludes over-pressure, contamination, improper install.
Get Your Quote Today
Join OEMs switching to Ever-power for 50mm bore cylinders. Competitive pricing, OEM specs, responsive support. New customers get complimentary seal kits.
Ever-power Cylinder Co. | Quality Assured | Ships Globally | 25/5134221
