Belt Driven Spindles Internal Grinding
PMK Belt Driven Spindles for Internal Grinding are designed for precision bore and hole finishing where stability, balance, and surface quality are critical.
Built with high-accuracy bearings and balanced rotor assemblies, these spindles deliver speeds up to 30,000 rpm with smooth torque transmission. Compact and durable, they are ideal for integration in internal grinding machines where space, accuracy, and vibration control are key.
Key benefits
- Performance: supports spindle speeds from 9,000 to 30,000 rpm for a wide range of internal grinding applications.
- Precision: fine-balanced construction ensures minimal runout and superior bore accuracy at high speed.
- Reliability: grease-lubricated bearings enable consistent performance with low maintenance.
- Compatibility: available in multiple body diameters (50–120 mm) and quill sizes (Ø9–Ø28) to match diverse machine configurations.
- Durability: designed for continuous-duty operation with rigid housings and long bearing life.
Applications
- Internal cylindrical grinding and bore finishing.
- Precision machining of bearing races, sleeves, and bushings.
- Automotive, tool, and component manufacturing industries.
- Integration into CNC and conventional internal grinding machines.
Specifications
| SPINDLE TYPE | A(h5) | B | d | W | L1 | L2 | M1 | b | Z |
|---|---|---|---|---|---|---|---|---|---|
| 50IGB | 50 | 250 | 10 | 18 | 15 | 19 | M10 | 10 | 8 |
| 60IGB | 60 | 350 | 14 | 23 | 20 | 19 | M14x1.5 | 11 | 10 |
| 80IGB | 80 | 350 | 16 | 33 | 24 | 19 | M16x1.5 | 15 | 11 |
| 100IGB | 100 | 350 | 28 | 43 | 42 | 25 | M28x2 | 16 | 13 |
| 120IGB | 120 | 400 | 32 | 53 | 50 | 30 | M30x2 | 20 | 15 |
| 150IGB | 150 | 400 | 45 | 68 | 60 | 35 | M40x2 | 25 | 18 |
| 170IGB | 170 | 400 | 55 | 78 | 70 | 40 | M50x2 | 30 | 20 |
| SPINDLE TYPE | SW | N | k | L3 | d1 | M2 | L4 | L5 | STEEL SPEED | HYBRID SPEED |
|---|---|---|---|---|---|---|---|---|---|---|
| 50IGB | 15 | 7 | 18 | 20 | 8 | M6 | 12 | 8 | 30000 | 40000 |
| 60IGB | 19 | 7 | 23 | 25 | 10 | M8 | 14 | 10 | 24000 | 30000 |
| 80IGB | 27 | 8 | 33 | 35 | 12 | M10 | 21 | 18 | 18000 | 25000 |
| 100IGB | 36 | 12 | 43 | 50 | 14 | M12 | 25 | 20 | 15000 | 22000 |
| 120IGB | 45 | 15 | 53 | 60 | 18 | M16 | 30 | 25 | 12000 | 18000 |
| 150IGB | 55 | 18 | 68 | 70 | 22 | M20 | 32 | 28 | 10000 | 15000 |
| 170IGB | 65 | 20 | 78 | 80 | 28 | M24 | 35 | 30 | 8000 | 12000 |
* Specifications subject to change. Contact us for the latest datasheet and custom configurations.
Notes
- With spindle bearings designed for high precision and speed.
- Lubrication type: lifetime grease or oil‑air lubrication depending on bearing type and speed.
- Conditions:
- Depending on tool design and weight, the maximum operating Speed may reduced.
- For grinding, cutting speed of the grinding wheel should not exceed 35 m/s.
* Refer Disclaimer policy for more details.
