Used SIP RI 21 Thread Grinding Machine | A.K. Machine Traders, Navi Mumbai, India

This used SIP RI 21 thread grinding machine is available from A.K. Machine Traders in Navi Mumbai, India. It grinds precision threads on round workpieces.

It handles thread diameters of 22–180 mm and workpieces up to 280 mm in diameter, with a grinding length of 110 mm and a thread pitch of 5 mm. The machine weighs approximately 1.4 t and has a compact footprint of approximately 1.4 x 1.0 x 1.5 m.

Technical Specifications

• Model: SIP RI 21
• Thread diameter: 22–180 mm
• Grinding length: 110 mm
• Thread pitch: 5 mm
• Grinding depth: 125 mm
• Max. workpiece diameter: 280 mm
• Workpiece turning speed: 0.6–12 rpm
• Grinding wheel diameter: 55–90 mm
• Spindle speed range: 8,700–12,150 rpm
• Weight: approx. 1.4 t
• Dimensions: approx. 1.4 x 1.0 x 1.5 m

Applications

• Precision threaded shafts and spindles
• Lead screws and feed screws
• Thread gauges and tooling
• Threaded components for machine tools

Commercial Details

• Make: SIP
• Model: RI 21
• Condition: Used
• Location: Navi Mumbai, Maharashtra, India
• Seller: A.K. Machine Traders

Frequently Asked Questions

• What thread sizes can it grind? It grinds thread diameters of 22–180 mm with a pitch of 5 mm and a grinding length of 110 mm.
• What is the largest workpiece it takes? The maximum workpiece diameter is 280 mm.
• How big and heavy is the machine? It measures approximately 1.4 x 1.0 x 1.5 m and weighs approximately 1.4 t.
• What should I ask when enquiring? Ask for photos or video of the machine running under power, whether an inspection is possible, which accessories, wheels and tooling are included, the state of the control and electrics, and how loading and shipping will be handled.