Levelling Jack (Roller Screw)
The Levelling Jack (Roller Screw) utilizes a high-capacity Planetary Roller Screw mechanism where the inner tube slides precisely inside the outer tube. It is engineered to handle a massive axial load of 196,200 N, ensuring robust performance for heavy-duty defense applications.
The system features a 900 mm stroke length that can be completed in just 90 seconds. This performance is driven by an integrated Dual Directional Gear Box of the Worm Reduction type with a 1:11 ratio, enabling a consistent screw speed of 183 RPM, a linear speed of 61 mm/sec, and a screw torque output of 551 Nm.
Dual Directional Gear Box
| Type | Worm Reduction |
| Ratio | 1:11 |
Roller Screw Specification
| Sl. No. | Description / Parameter | Specification / Value |
|---|---|---|
| 1 | Axial Load on the Screw (W) | 196200 N |
| 2 | Stroke Length | 900 mm |
| 3 | Pitch of the Screw | 10 mm |
| 4 | No of Starts | 1 |
| 5 | Lead of the Screw | 10 mm |
| 6 | Time Required for Extension | 90 SEC |
| 7 | Linear Speed of Screw | 61 mm/SCE |
| 8 | Screw Speed | 183 RPM |
| 9 | Screw Torque | 551 Nm |
Safety Features
- Motor with fail safe brakes and hand release
- Limit switches for Retracted and Extended indications for Inner tube of Jack
- Maximum Working Inclination of 4°
- Visual Indications for Jacks under Out-rigged condition / Folded condition at both Control system and Cabin of vehicle
- Visual Indications for Jacks under Retracted / Extended condition at both Controlsystem and Cabin of vehicle
- Encoder for position feed back
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