Description
A30M300-600000-000B Hydraulic Cylinder
70mm Bore ?? 30mm Rod ?? 156mm Stroke
The A30M300-600000-000B from Ever-power represents the convergence of precision metallurgy and hydraulic engineering. A 70mm honed cylinder barrel works in concert with a 30mm hard-chrome rod to deliver consistent performance across 156mm of linear travel.
A30M300-600000-000B
70 mm
30 mm
156 mm
453 mm
Ever-power is recognized as a leading hydraulic cylinder manufacturer serving OEMs and distributors across 40+ countries.
Product Overview
Fleet operators find the A30M300-600000-000B compelling: premium specs at aftermarket pricing. The 70mm ?? 30mm combination physically interchanges with dozens of OEM part numbers while potentially exceeding their original performance. The balanced 70mm/30mm geometry optimizes extend/retract force differentials.
Ever-power offers comprehensive technical support including system sizing calculations, failure mode analysis, and on-site troubleshooting for qualified OEM partners. Application engineering services are available at no charge for orders exceeding 50 units annually.
Key Features
Precision-Honed Barrel
The 70mm 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 30mm 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.
Our single acting hydraulic cylinder expertise ensures every unit exceeds OEM benchmarks at lower lifecycle cost.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | A30M300-600000-000B |
| Bore | 70.0 mm |
| Rod | 30.0 mm |
| Stroke | 156.0 mm |
| Mount | 453.0 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 A30M300-600000-000B operates as a double-acting linear actuator. During extension, pressurized fluid enters the cap-end port acting on the full 70mm bore area. The resulting force extends the 30mm rod to 156mm 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 A30M300-600000-000B serves as primary tilt actuator on counterbalance forklifts, controlling mast forward/backward inclination. Its 70mm bore produces breakout force to lift palletized loads from tight stacks, while controlled retraction enables precise placement at height. Distribution centers with high-rack storage rely on smooth tilt control to prevent product damage during put-away and retrieval. Shock-resistant construction handles impact loads when the mast contacts travel stops.
Brand Compatibility
This 70mm bore cylinder directly replaces OEM actuators on JAC, Linde, and Crown forklift series. Ever-power maintains a dimensional database cross-referencing over 2,000 OEM part numbers ensuring physical and hydraulic compatibility without machine modification. Fleet managers running mixed-brand operations appreciate inventory consolidation ?? one Ever-power part number replaces multiple OEM references while maintaining OEM-level performance and reliability in demanding shift work.
Explore our resource on industrial hydraulic cylinders for installation tips and maintenance.
Customization Options
Beyond the standard 70mm ?? 30mm ?? 156mm, Ever-power offers engineering to modify this cylinder for unique installations. Our team reviews drawings and delivers tailored solutions in 10-15 business days.
Stroke
Extended/reduced from 156mm. Max depends on 30mm rod buckling.
Ports
BSPP, NPT, SAE in side, rear, or manifold orientations.
Rod End
Male/female threads, spherical bearings, clevis forks.
Seals
Viton for heat, PU for abrasion, PTFE for low friction.
Manufacturing & Quality
Manufacturing begins with material inspection ?? 27SiMn steel at 520MPa yield verified. CNC turning machines shape the 70mm barrel OD and cap threads to H8. Honing produces the critical bore finish. Pistons are CNC’d from ductile iron with PTFE bands, assembled in Class 1000 cleanroom. Every cylinder pressure-tested at 1.5?? rating for 60 seconds.
Material
70mm barrel, mill certs
CNC
70mm bore honed H8
Chrome
Rod ??20??m, HV900
Assembly
Cleanroom, torqued
Test
1.5??, 60s hold
CMM
Dimensional report
How to Select the Right Hydraulic Cylinder
Specifying the correct hydraulic cylinder requires matching physical dimensions, force requirements, and environmental conditions. For the 70mm bore, 30mm rod, 156mm stroke, and 453mm mounting distance of your application, verify each parameter systematically against your equipment drawings and operating specifications to ensure proper fit and function.
- Verify Bore Diameter
The 70mm bore produces 76N at 20 MPa. Measure existing bore or calculate from system pressure and required force. Ensure the bore matches your hydraulic pump output and valve capacity. - Confirm Rod Diameter
The 30mm rod must withstand side loads from steering linkage. Verify rod end threads match knuckle arm. Check chrome surface is free of scoring that would damage seals during operation. - Measure Stroke Length
Measure full linear travel from retracted to extended. The 156mm stroke must equal or exceed this distance. Consider internal cushioning requirements for smooth deceleration.
Structural Components
The 70mm barrel forms the pressure vessel from seamless 27SiMn tubing with honed interior serving as piston bearing surface. End caps are precision-threaded steel forgings containing inlet ports and attachment points. Inside, the ductile iron piston with PTFE wear rings divides the barrel into two pressure chambers. The 30mm rod extends through the gland combining wiper seal, rod seal, and bearing sleeve. Static O-rings seal barrel-to-cap joints; threading rather than welding enables future rebuild.
Cylinder Barrel
70mm honed seamless 27SiMn steel, H8 tolerance
Piston Rod
30mm hard chrome plated, HV??900, Ra 0.4??m
Piston
Ductile iron with PTFE wear bands
Gland
Threaded cartridge: seal, bearing, retention
Ever-power Technical Deep Dive
Performance Boundaries
The 70mm bore A30M300-600000-000B sustains 28 MPa ?? 12% above rating ?? across 250,000 cycles with seal integrity. The 30mm rod deflects less than 0.03mm per 100mm unsupported. Thermal imaging shows barrel stabilization at 45??C above ambient.
Frequently Asked Questions
Pressure rating of A30M300-600000-000B?
Rated 25 MPa continuous, 37.5 MPa test pressure. Burst margin exceeds 2.5?? working pressure. The 70mm barrel is 27SiMn steel at 520 MPa yield.
Seal life on 30mm 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 30mm rod chrome handles up to 55% glycol. Keep below 50??C to prevent vapor formation.
Weight of 156mm stroke unit?
Approximately 3.0 kg for standard 70mm bore, 30mm rod, 156mm stroke with pin-eye mounts. Heavy-wall adds 15-20%.
Get Your Quote Today
Need 70mm bore cylinders fast? Strategic inventory of 30mm rod configs for immediate shipment. Custom specs in 15 business days.
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