ROTHENBERGER ROBEND 4000 E accu-buigset 1/2 inch-1 1/8 inch CAS

On busy construction sites, HVAC and plumbing professionals often face the challenge of bending copper and thin-walled steel pipes accurately without access to mains power. The ROTHENBERGER ROBEND 4000 E cordless pipe bender set solves this problem with its electro-hydraulic drive and R-DRIVE technology, delivering smooth, controlled bends up to 180° across five common imperial sizes: 1/2", 5/8", 3/4", 7/8" and 1 1/8" (12–28 mm). The set includes two 18V 4.0 Ah CAS batteries and a charger, ensuring continuous work with minimal downtime.

Key specifications

• Bending capacity: 1/2" – 1 1/8" (12–28 mm)
• Maximum bending angle: 180°
• Compatible materials: soft copper, hard copper (annealed), thin-walled stainless steel, carbon steel, coated pipes
• Max wall thickness: 1.5 mm (copper), 1.2 mm (stainless/carbon steel)
• Drive: electro-hydraulic with R-DRIVE technology
• Motor: brushless
• Battery system: CAS (Cordless Alliance System), 18V
• Included batteries: 2x 18V 4.0 Ah Li-Power
• Charger included: yes
• Included bending formers: 1/2", 5/8", 3/4", 7/8", 1 1/8"
• Case: ROCASE system case
• Tool weight (without battery): 4.5 kg

Why choose it

The ROBEND 4000 E combines cordless freedom with hydraulic power, allowing you to bend pipe quickly and accurately without deformation. The automatic reverse function speeds up the return stroke, reducing cycle times. The brushless motor ensures long service life and high efficiency, while the CAS battery platform lets you share batteries with other CAS tools from leading brands.

Ideal use cases

• Plumbing installations in residential and commercial buildings
• Heating system pipework
• Refrigeration and air conditioning lines
• Industrial maintenance and repair

Good to know

The set comes in a durable ROCASE system case for easy transport and organization. With the CAS battery system, you can use the same batteries across multiple tools, reducing overall costs and downtime. Always follow the manufacturer's guidelines for pipe preparation and bending to achieve optimal results.