Card sleeve type spindle

British R Kraftzman Expanding Mandrel
Expanding mandrels are more versatile and more precise than fixed mandrels and similar fixtures. They can be used in almost all machining and inspection processes. They are often used in turning, grinding and milling. Gear machining grinding vertical drilling during assembly and inspection operations.

Features:
Adapt to larger hole diameter deviations while ensuring concentricity
Fast and firm clamping
Easy to connect to existing machine structures
Rely on back gear Plate fixed workpiece
Positive clamping and release device
Where feasible, a single cone can provide maximum support
Interchangeable expansion sleeves to meet different workpiece size requirements
Controllable reference plane

Advantages:
Improve machining accuracy (concentricity up to R
Reduce production costs
Increase output
Reduce operations Steps
Reduce the number of card installations and card withdrawals
Reduce the scrap rate.

Types of mandrels:
The expansion sleeve type mandrel is the most commonly used type. The expansion sleeve is made of high quality The tapered spring steel ring is made by high temperature treatment and precise segmentation. When acted upon by the matching cone, it can expand in parallel.
Other styles are also available, such as ferrule type, hydraulic type, segmented jaw type, filling type and Disc mandrel.