Hydraulic auto indexing chuck for CNC lathe spindle-side indexing and multi-angle turning.
Hydraulic Auto Indexing Chuck
The KORRETTO hydraulic auto indexing chuck, also described as an automatic indexing chuck, is designed for CNC lathe spindle-side workholding that needs program-controlled angular indexing. It is used for valve bodies, cross shafts, universal joints and other parts requiring multiple angular faces in one setup, helping reduce manual repositioning and re-clamping.
Product Overview
This hydraulic auto indexing chuck page focuses on automatic indexing applications, hydraulic sequencing and CNC control integration rather than TK model parameters. The chuck is mounted at the machine spindle for sequential angular repositioning during machining and can reduce repeated setup and re-clamping compared with manual repositioning.
It is suited to cross shafts, universal joints, valve bodies, hydraulic valve blocks and intersecting multi-hole parts. Hydraulic oil is supplied through a tailstock rotary distributor; indexing motion can be coordinated with the machine program and completion signals before the next operation.
Typical Applications
Better suited:
- Cross shafts, universal joints, valve bodies and intersecting-axis parts
- Multiple angular faces in one setup
- 6-, 8- or custom equal divisions
- Program-controlled clamp, release and indexing sequences
- Batch production with reduced manual repositioning
Less suited:
- Standard three-jaw clamping only, without indexing
- Circular-hole or multi-face milling where the datum is on the machine table — use a dividing head / rotary table instead
- Simple clamping without hydraulic supply or rotary oil interface
Key Features of Hydraulic Auto Indexing Chucks
Spindle-side indexing workholding for multi-angle repositioning.
Multiple machined faces in one setup to reduce re-clamping.
Hydraulic sequence for clamp, release and indexing motion.
Tailstock rotary oil distributor for oil flow while the spindle rotates.
Suitable for cross shafts, universal joints, valves and multi-hole parts.
Indexing completion signals for program-controlled cycles.
Indexing and Clamping Principle / Structure Illustration
Installation and spindle-side indexing
Installation and spindle-side indexing layout
Indexing motion
Indexing motion example
Typical workpieces
Typical workpiece examples
Structure layout
The structure diagram above is used to check installation space, interface dimensions and layout. For TK series performance data and system components, see the TK Series Hydraulic Indexing Chuck page.
Selection Information for Hydraulic Auto Indexing Chucks
Use the information below to prepare a hydraulic auto indexing chuck inquiry. These items help confirm chuck layout, indexing control, machine interface and machining sequence.
| Item | Information Required |
|---|---|
| Workpiece size | Required for chuck and jaw layout confirmation |
| Indexing angle | Required for indexing control confirmation |
| Clamping method | Hydraulic clamping and control requirements should be confirmed |
| Machine interface | Required for installation and spindle matching |
| Process requirement | Required for multi-process machining and indexing sequence |
Selection Notes
- Machine model and spindle interface
- Workpiece diameter, length and clamping position
- Number of indexing stations, such as 6×60° or 8×45°
- Workpiece material and stock allowance
- Existing hydraulic unit and tailstock oil interface
- Robot loading clearance if required
- Target indexing cycle time and batch volume
FAQ
What is a hydraulic auto indexing chuck used for?
A hydraulic auto indexing chuck is used on CNC lathes to clamp a workpiece and automatically index valve bodies, cross shafts, universal joints or other multi-angle parts to repeatable positions during machining.
How is it different from a TK series hydraulic indexing chuck?
The hydraulic auto indexing chuck focuses on automatic indexing and system-level indexing control, while the TK series hydraulic indexing chuck is a specific hydraulic indexing chuck series with model-based parameter selection.
What information is needed for selection?
Please provide workpiece size, material, required indexing angle, clamping method, machine interface, hydraulic control requirements and machining process.
Is this the same as a dividing head or rotary table?
No. This product is part of the chuck and workholding system. Dividing heads and rotary tables are machine tool accessories used for table-side indexing or rotary positioning.