3-roller plate bending machine KRM ST 25/6

electricconicalfor metal fabrication

Product description
The KRM ST series performs cylindrical bending on workpieces up to 3,000 mm in length. The KRM ST 25/6 is a heavy, medium-capacity 3‑roll plate bending machine with a solid closed frame and a motorized rear roll. Conical bending and pre-bending enable versatile single-piece production for metalworking, steel and metal construction.

Highlights

• Asymmetrical roll arrangement for heavy plates
• Motorized drive (4 kW)
• Hardened, crowned rolls suitable for stainless steel
• Conical bending function

Product details

• Heavy closed machine frame with motorized rear roll infeed for metalworking and steel construction
• Asymmetric roll layout allows processing of thick plates
• Rear roll feed manually adjustable; motorized feed optional
• Crowned rolls machined from high‑grade steel and hardened
• Wire insertion grooves in lower and rear rolls
• Upper and lower rolls driven by an electric motor through a reduction gearbox
• Direction of rotation controlled by foot switch on a separate control panel
• Electromagnetic brake prevents overrunning and ensures control during bending
• Motorized rear roll with scale for position indication; digital readout optional
• Upper roll folds up to facilitate part removal
• Rear roll can be offset to one side for conical work by loosening the torsion shaft coupling
• Robust side bearing absorbs high forces during conical bending
• Central lubrication simplifies maintenance and ensures reliable operation

Technical specifications

• Model: KRM ST 25/6
• Working length: 2,550 mm
• Max plate thickness (450 N/mm²): 6 mm
• Max plate thickness with prebending: 5 mm (stainless steel: 2 mm)
• Max plate thickness for conical bending: 2 mm
• Min bending diameter: 285 mm
• Roll diameter: 190 mm
• Main drive motor: 4 kW
• Overall dimensions (L x W x H): 4.7 m x 0.95 m x 1.3 m
• Weight: 3,400 kg