Hollow Core Double Acting Oil Return Cylinders
Hollow-Core Double-Acting Oil-Return Cylinders combine the versatility of a through-rod (hollow-core) design with the power and control of a double-acting hydraulic system. These cylinders provide full hydraulic force for both extension and retraction strokes, enabling precise push and pull operations — lifting, pressing, extracting, or realigning heavy components with smooth, controlled motion. The hollow centre allows use of tension rods, cables, or bolts for through-rod operations — useful for bearing/bush extraction, tube pulling, liner removal, machinery overhauling, and similar tasks.
Technical Specifications:
Cylinder Capacity : 10-100 ton.
Stroke : 50-150 mm.
Closed Height : 195-335 mm.
Material : Steel.
Applications:
- Bolt and flange tensioning or loosening using through-rod tension bars or studs.
- Bearing, bush, shaft, tube or liner extraction and removal from machinery or assemblies.
- Pulling operations in heat exchangers, pipelines, and structural tubes.
- Lifting, aligning, or repositioning heavy components where bidirectional motion is required.
- Maintenance, overhaul, and repair tasks in industrial plants, refineries, power plants, and heavy equipment workshops.
- Shutdown/turnaround operations involving removal, realignment, or extraction of parts.
- Structural alignment, jacking, or positioning during assembly or disassembly of heavy machinery or frameworks.
Key Features:
Hydraulic fluid powers both the extension and retraction strokes, giving full control and force in both directions for push and pull tasks.
Central bore allows insertion of rods, cables, bolts or fixtures — ideal for tensioning, extraction, bearing/bush removal, tube pulling, and other through-rod operations.
Available in multiple tonnage and stroke configurations (as per model data) to suit varied load and displacement requirements.
Hydraulic return ensures reliable retraction and smooth motion, especially valuable where repeatable accuracy and controlled force are needed.
Suitable for pulling, pushing, lifting, tensioning, extraction, aligning — making the cylinder a multipurpose tool for maintenance, plant overhaul, installation, and structural work.
Constructed for heavy-duty use — engineered for durability and dependable performance under repeated load cycles and demanding industrial conditions.
Delivers controlled hydraulic force in both directions, offering more flexibility than single-acting cylinders — suitable for complex maintenance, repair, and overhaul tasks.
Product Specifications:
- Technical Data
Double Acting, Oil Return
| Model No. |
Cylinder Capacity (Ton) |
Stroke (mm) |
Closed Height (mm) |
Weight (Approx) (Kg) |
| TDH-103 | 10 | 75 | 210 | 6 |
| TDH-104 | 100 | 235 | 7 | |
| TDH-202 | 20 | 50 | 195 | 10 |
| TDH-204 | 100 | 245 | 12.5 | |
| TDH-206 | 150 | 295 | 15 | |
| TDH-302 | 30 | 50 | 210 | 15 |
| TDH-304 | 100 | 260 | 18 | |
| TDH-306 | 150 | 310 | 21 | |
| TDH-504 | 50 | 100 | 270 | 27 |
| TDH-603 | 60 | 75 | 260 | 30 |
| TDH-604 | 100 | 285 | 33 | |
| TDH-606 | 150 | 335 | 38 | |
| TDH-1003 | 100 | 75 | 290 | 52 |
| TDH-1004 | 100 | 315 | 56 | |
| Features: | ||||
| ● For removing and assembling bearing bushes, pins, cylinder liners, pulling tubes of heat exchangers, gears and flanges of machinery. | ||||