Belt Driven Extra Long Grinding Spindle
PMK Belt Driven Spindles for Internal Grinding (Long Bore) are engineered for deep-hole and long-bore grinding applications that demand rigidity, precision, and consistent performance over extended reaches.
These spindles are dynamically balanced and precision-assembled with high-grade bearings to ensure stability, minimal vibration, and accurate bore geometry at speeds up to 17,000 rpm. The design provides optimal stiffness and smooth power transmission, making it ideal for heavy-duty and high-precision internal grinding operations.
Key Benefits
- Performance: supports extended reach operations up to 600 mm with spindle speeds from 7,500 to 17,000 rpm.
- Precision: balanced shaft and high-grade bearings ensure concentricity and consistent bore finish across long depths.
- Rigidity: reinforced spindle construction minimizes deflection during deep internal grinding.
- Reliability: grease-lubricated bearings and robust housings deliver low maintenance and long service life.
Applications
- Long-bore and deep-hole internal grinding of precision components.
- Bearing, hydraulic, and automotive part manufacturing.
- Toolroom and production setups requiring extended grinding reach.
- Retrofit or OEM use in CNC and manual deep internal grinders.
Specifications
| SPINDLE TYPE | D2(h5) | D1 | A | L1 | L | LUBRICATION | SPEED RPM |
|---|---|---|---|---|---|---|---|
| 50 LGB | 70 | 35 | 36 | 240 | 400 | GREASE | 17000 |
| 60 LGB | 80 | 60 | 62 | 250 | 500 | GREASE | 10000 |
| 80 LGB | 100 | 70 | 73 | 300 | 550 | GREASE | 8500 |
| 100 LGB | 100 | 80 | 83 | 350 | 600 | GREASE | 7500 |
* Specifications subject to change. Contact us for the latest datasheet and custom configurations.
Notes
- Direction of rotation to be specified by customer.
- All spindles grease lubricated for life.
- Higher speed spindles can be made with oil mist lubrication as per customer requirement.
- Length of spindle can be made as per customer requirement.
- Flange mounted spindles can be made as per customer requirement.
- All dimensions are in millimeter.
* Refer Disclaimer policy for more details.
