The DURO-M is a manually operated lathe chuck with a plan spiral and through hole. It is primarily used on conventional lathes for the machining of turned parts.

Technical Features:

• Chuck body (as well as all other components) made of steel
• Centrally clamped via plan spiral
• Plan spiral forged in a die and highly tempered, thread flanks ground on both sides
• Jaws ground for concentricity in the chuck
• Factory-determined zero play as accuracy drive

The maximum permissible speed is set so that at maximum clamping force and when using the heaviest associated jaws, one third of the clamping force remains available as residual clamping force. The jaws must not protrude beyond the outer diameter of the chuck. The chucks must be in perfect condition. Furthermore, the regulations according to DIN 6386 Part 1 apply.

Clamping force according to DIN 6350: The clamping force is the sum of all jaw forces acting radially on the workpiece while at rest. The specified clamping forces are guideline values. They apply to chucks in perfect condition that are lubricated with Röhm grease F80.

Scope of delivery: Chuck, chuck key, jaws

Application area:
Conventional clamping horizontal and vertical lathes as well as milling machines, rotary tables, and dividing heads. Mainly used in single or small batch production or repair workshops. Clamping of rotationally symmetrical parts for turning and milling operations.

Advantages:

• Jaws generally blued
• Minimal interference contour
• High force transmission
• Drip edge for coolant

Mounting short taper: 6
Jaw length (mm): 95
Height (mm): 83
Mounting (mm): 106.4
Through hole (mm): 76
Max speed (r/min): 3000
Clamping force (kN): 63
Number of jaws: 3
Type: 250/3
Manufacturer: RÖHM
Torque (N·m): 150
Quantity (ST): 1.