APPLICATION
Conventional clamping horizontal and vertical turning machines, as well as milling machines, rotary tables and dividing attachments. Predominantly for use in single or small batch production or in repair shops. Clamping of rotationally symmetrical parts for turning and milling.

TECHNICAL FEATURES
- Chuck body made of steel
- Centric clamping via scroll ring
- Scroll plate drop forged and highly tempered
- Jaws in chuck ground out for concentricity
- Zero drive determined in the factory as precision drive
- Scope of delivery: chuck, chuck key, jaws

Duro-M's chuck body is made of steel and designed for optimal accessibility. At the same time, it has a low weight and inertia level, high clamping force and an excellent price/performance ratio.

At the rear of the spindle is a built-in test edge, with which you can measure the concentricity of the spindle on your machine tool by means of a dial gauge.

Characteristic scallops for weight reduction and good accessibility: Let’s start with what’s most visible – specifcally the parts that are missing: on the base body of the Duro-M we have machined the characteristic scallops. This brings you tangible benefits. Firstly in terms of weight. It makes the Duro-M lighter. This not only protects the bearings of your turning machine spindle, it also allows greater acceleration due to the lower mass inertia, and thus reduces
energy consumption.

A check edge is worked into the rear section of the chuck. Here, a dial gage can be used to measure the concentricity of the chuck on your machine tool.

Optimum force transmission: The Duro-M has the highest force transmission of all scroll chucks. And not just on paper - this is a genuine benefit: firstly it means that you have to supply - comparatively - lower forces to obtain the maximum clamping force. And this maximum clamping force is also one of the highest available. Secondly, it means that you can adjust the clamping force much more precisely. The Duro-M is very responsive to adjustment. And this smart design also has another tangible benefit: the higher force transmission saves on height. So the Duro-M has a lower profile in comparison to other options. This means more working envelope. And less height also means less material – making the Duro-M potentially lighter, which not only saves energy but also allows higher speeds.

PROVEN CHUCK WITH SPIRAL RING 
The RÖHM geared scroll chucks have already been in use for decades and have proven themselves a thousand times over. The jaws can be quickly adjusted over the entire clamping range by means of the spiral ring. Using the radially arranged drive, the force is transferred to the hardened spiral ring via a bevel gearing and further conducted to the clamping jaws via the spiral. And we are now continuing to write this story: with the new DURO-M scroll chuck - Made in Germany. It carries the genes of its predecessors and inherits their most important properties, such as durability, precise power transmission and fast jaw adjustment over the entire clamping range. The most significant change: the characteristic scallops. They not only look good, but also have tangible benefits such as weight reduction and good accessibility. In addition, the DURO-M impresses with optimized power transmission and high rigidity. Due to the wide range of diameters, the DURO-M can be used on all common spindle interfaces and is thus designed for long-term and durable use.