Description
LPG418.4.4-2-00 Hydraulic Cylinder
100mm Bore ?? 55mm Rod ?? 320mm Stroke
Ever-power presents the LPG418.4.4-2-00 ?? a high-performance hydraulic cylinder featuring a precisely machined 100mm bore, a corrosion-resistant 55mm rod, and an optimized 320mm stroke length for seamless integration into OEM steering assemblies.
LPG418.4.4-2-00
100 mm
55 mm
320 mm
700 mm
Ever-power has established itself as a premier industrial hydraulic cylinders through consistent quality and responsive support.
Product Overview
The LPG418.4.4-2-00 optimizes the 100mm bore area and 55mm rod annulus relationship. This geometry produces predictable force in both extension and retraction, eliminating jerky motion. The multi-lip seal ?? PTFE-bronze wiper, PU U-cup, and nitrile O-ring ?? maintains leak-free operation from arctic cold to tropical yards. The substantial 100mm bore handles large-capacity forklifts and container handlers.
Maintenance intervals depend on duty cycle severity. Under normal warehouse conditions with clean fluid, inspect rod surface and wiper seal condition every 500 operating hours. Replace seal kit proactively at 4,000 hours to prevent unplanned downtime during critical operations.
Key Features
Balanced Force Geometry
The 100mm ?? 55mm bore-to-rod ratio is optimized to produce predictable push and pull force characteristics. This eliminates jerky steering response during rapid pressure transients when navigating tight warehouse aisles or maneuvering in congested loading dock areas.
Induction-Hardened Core
The 55mm rod core achieves HRC 28-32 through induction hardening prior to chrome deposition. This substrate hardness supports the chrome layer against denting from impact loads during dock operations, pothole traversal, and rough terrain encountered in outdoor yard applications.
Cleanroom Assembly
Pistons and seals are installed in a controlled environment maintaining particle counts below Class 1000 levels. This prevents airborne contamination from causing internal scoring of precision-honed surfaces and premature seal degradation during initial break-in period.
CMM Verification
Coordinate Measuring Machine inspection confirms all critical dimensions including bore diameter, rod concentricity, stroke length accuracy within ??0.5mm, and mounting hole positional tolerances before release from quality hold.
Ever-power custom hydraulic cylinders expertise reduces downtime for demanding industrial applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | LPG418.4.4-2-00 |
| Bore | 100.0 mm |
| Rod | 55.0 mm |
| Stroke | 320.0 mm |
| Mount | 700.0 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
Through Pascal’s principle, pressurized oil from the gear pump enters the LPG418.4.4-2-00’s 100mm bore. At 16-21 MPa typical for forklifts, pressure acts on the piston face creating force proportional to the bore area. The 55mm rod emerges, pivoting the steering linkage through an arc from 320mm stroke and lever geometry. Reversing the wheel switches valve position, pressurizing the rod-side chamber. The differential area means extension force exceeds retraction force.
Applications
The LPG418.4.4-2-00 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 hydraulic cylinder manufacturer 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 55mm, stroke 320mm, mounting 700mm ?? considering duty cycle, fluid type, temperature range, and contamination exposure in your application.
- Calculate Forces
Extension: 157N. Retraction: 109N at 20 MPa. Verify these exceed application loads including safety margins for peak conditions. - Check Envelope Dimensions
Mounting 700mm, retracted 380mm, extended 700mm ?? 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 55mm 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 55mm rod chrome meets RoHS 2011/65/EU. Full lot tracking links mill heat numbers to finished cylinder serial numbers.
Frequently Asked Questions
How to measure for LPG418.4.4-2-00?
Measure: extended pin-to-pin, retracted length, 100mm bore, 55mm rod, pin diameter. Stroke = extended ? retracted. Match within ??2mm.
What causes external leaks?
Rod leaks: wiper/rod seal failure or heat damage. Port leaks: loose fittings. Barrel leaks: O-ring wear. Most fixed with seal kit. Persistent leaks need exchange.
Technical drawings available?
PDF and STEP formats at no charge. Includes all dimensions, ports, mounts, weight, torque specs. Contact technical support with your request.
Delivery time?
Standard 55mm rod, 320mm stroke: 10-15 business days. Express: 5-7 days at 20% premium. Volume orders: phased delivery. Regional stock may ship immediately.
Get Your Quote Today
Get LPG418.4.4-2-00 quotation within 24 hours. We cross-reference OEM part numbers. Bulk pricing and JIT programs available. Export documentation included.
Ever-power Cylinder Co. | Quality Assured | Ships Globally | LPG418.4.4-2-00
