TUBE BENDER

The BuTech tube bender is designed to bend heavy wall tubing and provide fast, accurate and reliable bending with only one setup. The tube bender is complete with slide block, radius block and bending shoes in a portable, lockable case. This unit is compact and weight is held to a minimum. It may be easily transported to any area for service use where a vise is available for holding the bender.

The bender operating mechanism consists of a cast aluminum frame and base, with a manual crank-operated steel worm gear mechanism. A 60:1 gear ratio enables the operator to make bends up to 180° in one continuous smooth operation without strain or fatigue. Center drive shaft and worm gear shaft are supported with pre-lubricated ball bearings. The worm gear has a ball-type thrust bearing. Worm wheel and gear are enclosed for safety, and protection from external damage. Worm wheel drive can be readily disengaged to allow quick return of the radius block after bending without being returned through the gear train.

An adjustable screw vise, guided on the bender frame, is used to position the slide block against the radius die block to hold the tube for proper bending. Hardened steel face of the vise guides the slide block parallel to the bender centerline during the bending operation. The bender is designed to permit use of mandrel equipment when desired. Standard slide block is furnished with grooves for tube sizes 1/4", 3/8" and 9/16". The crank handle which operates the bender may also be used to adjust the screw connected to the vise plate. This screw telescopes so it will not project outward to interfere with rotation of the operating handle during the bending operation. The main base of the bender has a square boss for clamping in a bench vise, permitting 90° positioning; or the bender base can be mounted to an adapter unit and fastened to a work bench and used with mandrel equipment when extremely smooth bends in thin-wall tubing are required.

Each radius die block has graduated markings from 0° to 180° at intervals of 15° to indicate degree of bend. Each block has an integral clamp device for easy, quick, positive clamping of the tube. Radius die blocks can be furnished for all tube sizes with standard bends up to 5" radius. Each radius block is marked with tube size and radius for identification.

 

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