Rotor Tool AG Ltd is a Swiss-based company specialising in the design and manufacturing of high-precision tools, precision centres and pneumatic chucks.

Their live centres, also known as revolving tailstocks and foot stocks, are designed to improve the accuracy and efficiency of machining operations by providing a precise and stable centring point for workpieces.

Rotor Tool’s live centres can be used in various industries such as aerospace, automotive, medical, and energy, and are known for their high precision, durability, and versatility. They offer a range of models with different features and capabilities.

Main-Line

Available from MT 1 – MT 7 and metric Cones 80 and 100
Accuracy 0.005 (5 microns)
Surface hardened body and through-hardened Spindle
Body models: SMALL (light pieces and higher turning rates), STANDARD, SUPER
Lifetime Lubrication – no re-greasing necessary
Over-Pressure Security through a disc spring

Type L Centres

Application

Reliable top of the range for CNC and conventional lathes and grinding machines.
With over-pressure protection through disc springs.

Design

Surface-hardened body
Ground tapers conform to DIN228AT3
Through-hardened spindle made from high-grade steel
Spindle mounted by two needle bearings
Thrust ball bearings to accommodate axial loads
Over-pressure protection through disc springs
Reliable lip seal
Continuous lubrication using high-quality grease

Sizes

Morse tapers no. 1 to 7
Various metric tapers

Body and spindle models

SM (small): small body, for light pieces and higher turning speeds
ST (standard): for normal loads
SU (super): for heavy-duty loads and low turning speeds

Type of spindle

Type L = slim, extended point 60°

Loads
The weight indications for workpieces are based on the assumption that the workpieces are held between two live centres, and therefore, one centre must support a maximum of 50% of the workpiece weight. Additional loads – such as from imbalance or uneven weight distribution – are not permitted.

Important