Single Acting Cylinder
Spring Return Cylinder
An internal spring returns the piston the moment pressure drops. Built for clamping, pressing and light automation.
- Bore Diameter 50 mm to 1000 mm
- Piston Rod Diameter 30 mm to 900 mm
- Working Pressure Up to 350 bar
- Test Pressure 1.5 × working pressure
Specifications
| Bore Diameter | 50 mm to 1000 mm |
|---|---|
| Piston Rod Diameter | 30 mm to 900 mm |
| Stroke Length | Up to 6000 mm, application dependent |
| Working Pressure | Up to 350 bar |
| Test Pressure | 1.5 × working pressure |
| Mounting | Customer specified |
| Seal Material | Polyurethane / Nitrile, field replaceable |
| Cylinder Tube | Honed steel tube, H8 tolerance |
| Piston Rod | Hard chrome plated, f7 tolerance |
| Operating Temperature | -20 °C to +100 °C |
About this product
Spring Return Hydraulic Cylinders provide hydraulic force in one direction while a built-in mechanical spring automatically returns the piston to its original position when hydraulic pressure is released.
Unlike load return cylinders that depend on external forces for retraction, spring return cylinders carry their own return mechanism internally. This makes them ideal for applications where the cylinder may be mounted in any orientation — horizontal, vertical, or inverted — and a consistent, predictable return stroke is essential regardless of load direction.
KBR Engineers manufactures spring return cylinders with carefully selected spring rates matched to the application requirements. The springs are pre-loaded and housed within the cylinder barrel, ensuring smooth, controlled retraction every cycle. Each cylinder features precision-machined components, premium sealing systems, and undergoes thorough testing before shipment.
These cylinders are commonly used in clamping fixtures, pressing operations, punching machines, automated assembly systems, and any application requiring reliable automatic retraction in repetitive cycles.
Manufacturing Range
KBR Engineers manufactures a wide range of custom-built hydraulic cylinders to meet diverse industrial requirements. We offer cylinder bore sizes from 50 mm to 1000 mm and piston rod diameters from 30 mm to 900 mm. All cylinders are designed and manufactured using high-quality materials, precision machining, and advanced sealing technology to ensure reliable performance, durability, and long service life.
Features
High Pressure
Rated up to 350 bar working pressure.
Precision Honed
H8 tolerance bore finish for even seal wear.
Pressure Tested
Every unit tested at 1.5× working pressure before dispatch.
Automatic Return
Internal spring retracts the piston the moment pressure drops.
Applications
- Construction Equipment
- Material Handling
- Steel & Cement Plants
- Agriculture
- Mining
- Hydraulic Presses
Related Products
Load Return Cylinder
Retracts under external load or gravity. The simplest, most cost-effective choice for lifting and tipping duty.
Telescopic Cylinder — Single Acting
Multi-stage stroke from a short retracted length. Standard on tippers, dump bodies and lifting platforms.
Clevis Mounting Cylinder
Articulates with the load through its arc, so side loading never reaches the seals. For pivoting linkages.
Tie Rod Cylinder — Double Acting
Tie rod construction strips down for service without cutting a weld. The workhorse for fixed machinery.
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