Taper Mandrel
Taper Mandrel is also called as inspection mandrels and are used for checking the alignment of machine spindle axis. These taper mandrels are made of hardened and stabilised steel. Mandrels are provided with properly ground and lapped centres for easy usage and accuracy. In morse tapers, the Taper mandrel are self holding in the socket and in ISO tapers, a tapped hole is provided for fixing the mandrel with a threaded retaining pin.
Standard sizes and accuracy of Luthra Taper Mandrel As per IS-2063:1962:
| Taper | Length (mm) |
| MT-2 | 300 |
| MT-2 | 500 |
| MT-3 | 300 |
| MT-3 | 500 |
| MT-4 | 300 |
| MT-4 | 500 |
| ISO – 40 | 300 |
| ISO – 40 | 500 |
Other Sizes On Request
Parallel Mandrel
Parallel Mandrel are also called as inspection mandrels and are used for checking concentricity, parallelism and true running of components. Mandrel mounted between centres provides a reference straight line joining the two points (centres), so as to check the alignment of the centres. Parallel mandrels are made of hardened and stabilised steel. Mandrels are provided with properly ground and lapped centres for easy usage and accuracy.
Standard sizes and accuracy of Luthra Straight Mandrel and Parallel Mandrel As per IS-2063:1962:
| Parallel/Straight Mandrel | |
| Diameter (mm) |
Length (mm) |
| 40 | 300 |
| 40 | 500 |
| 40 | 600 |
| 50 | 300 |
| 50 | 500 |
| 50 | 600 |
| 60 | 300 |
| 60 | 500 |
| 60 | 600 |
Other Sizes On Request