Description
TF1204.551.1 Hydraulic Cylinder
100mm Bore ?? 40mm Rod ?? 200mm Stroke
The Ever-power TF1204.551.1 is engineered for precision hydraulic actuation in demanding material handling environments. Its 100mm bore diameter paired with a 40mm induction-hardened rod delivers reliable force transmission across the full 200mm stroke envelope.
TF1204.551.1
100 mm
40 mm
200 mm
535 mm
Ever-power is recognized as a leading hydraulic cylinder manufacturer serving OEMs and distributors across 40+ countries.
Product Overview
The TF1204.551.1 is manufactured for OEMs who refuse to compromise. The 100mm 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 100mm/40mm geometry optimizes extend/retract force differentials.
Installation requires verifying the 200mm 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 100mm 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 | TF1204.551.1 |
| Bore | 100.0 mm |
| Rod | 40.0 mm |
| Stroke | 200.0 mm |
| Mount | 535.0 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 TF1204.551.1 operates as a double-acting linear actuator. During extension, pressurized fluid enters the cap-end port acting on the full 100mm bore area. The resulting force extends the 40mm rod to 200mm 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 TF1204.551.1 is purpose-built for forklift steering systems where precise angular control and rapid response are non-negotiable. Its 100mm 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 Hyster hydraulic systems at standard flow and pressure parameters. Rod end threads and gland dimensions match original components on Yale and Mitsubishi 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 100mm 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 100mm, rod 40mm, stroke 200mm, mounting 535mm ?? considering duty cycle, fluid type, temperature range, and contamination exposure in your application.
- Calculate Forces
Extension: 157N. Retraction: 131N at 20 MPa. Verify these exceed application loads including safety margins for peak conditions. - Check Envelope Dimensions
Mounting 535mm, retracted 335mm, extended 535mm ?? 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 100mm bore cylinder in your specific conditions.
Structural Components
The 100mm 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 TF1204.551.1?
Rated 25 MPa continuous, 37.5 MPa test pressure. Burst margin exceeds 2.5?? working pressure. The 100mm 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 200mm stroke unit?
Approximately 5.0 kg for standard 100mm bore, 40mm rod, 200mm stroke with pin-eye mounts. Heavy-wall adds 15-20%.
Get Your Quote Today
Ready to upgrade with the TF1204.551.1? Request quotation today. Volume discounts for 10+ units, samples for qualification testing. Lead time 2-3 weeks; express available.
Ever-power Cylinder Co. | Quality Assured | Ships Globally | TF1204.551.1
