Description
N30M300-5/400000-000 Hydraulic Cylinder
56mm Bore ?? 45mm Rod ?? 1500mm Stroke
The Ever-power N30M300-5/400000-000 is engineered for precision hydraulic actuation in demanding material handling environments. Its 56mm bore diameter paired with a 45mm induction-hardened rod delivers reliable force transmission across the full 1500mm stroke envelope.
N30M300-5/400000-000
56 mm
45 mm
1500 mm
1658 mm
Ever-power is recognized as a leading hydraulic cylinder manufacturer serving OEMs and distributors across 40+ countries.
Product Overview
The N30M300-5/400000-000 is manufactured for OEMs who refuse to compromise. The 56mm bore is honed to H8 tolerance, creating ideal surface for piston seals. The 45mm rod undergoes induction hardening plus 20-micron chrome deposition, producing HV 900+ hardness resisting pitting in warehouse and construction environments. The generous 45mm rod provides exceptional column strength resisting buckling under load.
Installation requires verifying the 1500mm 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 56mm 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 45mm 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.
This demonstrates why Ever-power is preferred for single acting hydraulic cylinder among fleet operators.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | N30M300-5/400000-000 |
| Bore | 56.0 mm |
| Rod | 45.0 mm |
| Stroke | 1500.0 mm |
| Mount | 1658.0 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 N30M300-5/400000-000 operates as a double-acting linear actuator. During extension, pressurized fluid enters the cap-end port acting on the full 56mm bore area. The resulting force extends the 45mm rod to 1500mm 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 N30M300-5/400000-000 is purpose-built for forklift steering systems where precise angular control and rapid response are non-negotiable. Its 56mm 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
Engineered for interchangeability, this unit matches mounting envelope, port geometry, and force characteristics of factory cylinders on Doosan material handling equipment. Pin-eye and clevis dimensions conform to OEM specifications used by Hyundai and Toyota, allowing direct bolt-on replacement without adapters or bracket modifications. Aftermarket distributors stock this as a universal solution for Komatsu forklift families commonly found in rental and leasing fleets requiring rapid turnaround.
Visit our industrial hydraulic cylinders page for documentation and troubleshooting guides.
Customization Options
Ever-power’s program addresses that no two OEM installations are identical. Whether non-standard 56mm bore, specialized rod end, or alternative sealing, our engineers develop cost-effective solutions.
Material
Stainless barrel for corrosion, alloy upgrades for 45mm rod.
Surface
Nickel-chrome duplex, ceramic, phosphate, marine paint.
Temp
Low-temp NBR to -40??C, Viton to +150??C.
Testing
Extended cycling, salt spray, custom acceptance criteria.
Manufacturing & Quality
Lean workflow through machining, finishing, assembly, test. Seamless tubing CNC-turned. Diamond abrasives achieve cross-hatch on 56mm bore. Rods centerless ground, chrome-plated, eddy-current inspected. Torque-monitored assembly. Static hold, dynamic cycling, over-pressure verification.
Steel In
27SiMn, 520MPa cert
Turning
56mm bore, H8 finish
Surface
Hard chrome, 20??m+
Build
Seals, PTFE bands
Verify
Pressure, zero leak
Measure
CMM all critical dims
How to Select the Right Hydraulic Cylinder
Selecting a replacement cylinder involves evaluation of multiple interdependent parameters. Use this framework to confirm the 56mm ?? 45mm ?? 1500mm unit with 1658mm mounting suits your equipment. Each parameter affects performance, installation compatibility, and service life in your specific operating environment.
- Check Mounting Dimensions
Center-to-center between pins must match 1658mm ??2mm. Verify pin diameter compatibility. Check hose and fitting clearance at full extension without interference. - Pressure Compatibility
Confirm system operates at ??25 MPa with this 56mm bore. Verify pump flow produces acceptable extension/retraction speed for your steering response requirements. - Specify Seal Material
Standard NBR suits mineral oil at -30??C to +100??C. Select Viton for synthetic fluids or temps above 100??C. Specify PU for water-glycol mixtures at order time.
Structural Components
The 56mm barrel is the largest structural element, thick-wall seamless steel containing 25 MPa with 4:1 safety factor. The cap-end houses the inlet port and rear mounting ?? pin-eye or clevis lug machined integrally. The piston incorporates seal grooves and wear bands centering it within the 56mm bore. The 45mm rod resists axial tension and compression; hard chrome seals against the gland and withstands environmental exposure. The threaded rod gland integrates sealing, bearing, and retention in a replaceable cartridge.
Piston Rod
45mm hard chrome plated, HV??900, Ra 0.4??m
Piston
Ductile iron with PTFE wear bands
Gland
Threaded cartridge: seal, bearing, retention
End Caps
Steel forgings, CNC-machined, ported
Ever-power Technical Deep Dive
Smart Manufacturing
The 56mm bore production line uses OPC-UA connected MES with real-time OEE dashboards. AGVs move WIP between stations. Machine vision inspects at 50??m resolution. Predictive maintenance reduced downtime 45% and improved Cpk from 1.33 to 1.67.
Frequently Asked Questions
Pressure rating of N30M300-5/400000-000?
Rated 25 MPa continuous, 37.5 MPa test pressure. Burst margin exceeds 2.5?? working pressure. The 56mm barrel is 27SiMn steel at 520 MPa yield.
Seal life on 45mm 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 45mm rod chrome handles up to 55% glycol. Keep below 50??C to prevent vapor formation.
Weight of 1500mm stroke unit?
Approximately 14.0 kg for standard 56mm bore, 45mm rod, 1500mm stroke with pin-eye mounts. Heavy-wall adds 15-20%.
Get Your Quote Today
Ready to upgrade with the N30M300-5/400000-000? Request quotation today. Volume discounts for 10+ units, samples for qualification testing. Lead time 2-3 weeks; express available.
Ever-power Hydraulics | ISO Certified | Export Worldwide | Ref: N30M300-5/400000-000
