Durston Double D2 Combination Roller

Rolling mill without steel tube stand.
Durston Double D2 Double Roll with 7:1 and 3.5:1 gear ratios

The Double D2 from Durston Tools is a hand-operated double roller with two separate pairs of rollers in a single unit. The upper pair of rollers is designed for flat rolling and offers the full roller width of 130 mm. The lower pair of rollers is equipped with 19 square wire grooves. This allows sheet metal and wire to be processed on a single machine without retooling, and the flat rollers remain free of edges and transitions due to the grooves.

Both sets of rolls are each equipped with their own gearbox: the flat rolls operate at a reduction ratio of 7:1, while the wire rolls operate at 3.5:1. This enables uniform rolling with minimal effort, even when working with harder materials and larger cross-sections.

The side roller extensions feature four semicircular grooves at 4 mm, 3 mm, 2 mm, and 1.5 mm, for example, for the production of ring rails. Additional extension rollers with other profiles are available as an option.

The Double D2 is the first Durston roller with roller bearings. All gears are enclosed in a plastic housing. Large, easy-to-read scale discs for adjusting the rolling gap and guide plates ensure safe and repeatable operation throughout the machine’s entire service life.

For safe operation, the roller should be securely mounted on a suitable roller stand or a heavy-duty workbench. For significant cross-sectional reductions, it is recommended to anneal the material between individual rolling passes.

Technical Specifications:
- Model: Durston Double D2
- Configuration: Double roller with separate pair of flat rollers and pair of wire rollers
- Gear ratio: 7:1 (flat rollers) and 3.5:1 (wire rollers)
- Roll diameter: 60 mm
- Roll width: 130 mm
- Flat rolling range: 130 mm (full roll width)
- Max. sheet thickness: 6 mm
- Square wire grooves: 19 grooves
- Groove sizes in mm: 1 / 1.05 / 1.1 / 1.15 / 1.25 / 1.35 / 1.5 / 1.7 / 1.9 / 2.2 / 2.5 / 2.9 / 3.35 / 3.9 / 4.5 / 5.2 / 6 / 6.95 / 8
- Side extensions: 4 half-round grooves in 4 / 3 / 2 / 1.5 mm
- Bearings: Roller bearings
- Safety: Gears with plastic covers, guide plates
- Adjustment: Large calibrated scale discs
- Dimensions (L x W x H): 420 x 220 x 565 mm
- Weight: approx. 74 kg
- Manufacturer: Durston Tools, United Kingdom


This roller WITH cabinet stand can be found under reference number 4460008