TK hydraulic indexing chuck models with 0.003° accuracy, 6×60° and 8×45° indexing.
TK Series Hydraulic Indexing Chuck
This TK hydraulic indexing chuck page provides model-specific data for TK-168 through TK-1200, including 0.003° indexing accuracy, 6×60° and 8×45° standard divisions, clamping force, stroke, dimensions and system components. It is intended for CNC lathe model selection rather than general indexing chuck comparison or automatic indexing application guidance.
Product Overview
The TK hydraulic indexing chuck clamps the workpiece at the spindle and performs automatic angular indexing, while this page focuses on model parameters and system components for TK-168 through TK-1200. Hydraulic oil is supplied through a tailstock rotary distributor for clamping, release and indexing; the chuck is mechanically locked at each indexed position and completion signals can be integrated into the machine program before the next step.
The series covers TK-168 through TK-1200 with chuck bore D1 from 168 to 1200 mm. Typical parts include valve bodies, cross shafts, universal joints, hydraulic and pneumatic valve blocks, fire fittings, flanges and large valve components that require multiple angular faces in one setup.
Typical Applications
Better suited:
- Valve bodies, valve blocks, cross shafts, universal joints and flange parts
- 6-, 8- or custom equal divisions in turning operations
- Multiple angular holes, faces or slots in one setup
- Production lines with program-controlled indexing and position confirmation
- Automated turning cells that need robot loading clearance
Less suited:
- Standard external turning with conventional three-jaw clamping only
- Milling or drilling where the datum is on the machine table
- Simple clamping without hydraulic supply or rotary oil interface
Key Features of TK Series Hydraulic Indexing Chucks
Hydraulic indexing
Hydraulic actuation for clamping, release and angular repositioning.
Mechanical locking
Mechanical lock at the indexed position after each index cycle.
Indexing accuracy 0.003°
Suitable for repeated multi-angle production runs.
Standard divisions
6×60° and 8×45° standard layouts; other equal divisions available on request.
Complete system layout
Includes chuck body, flanges, connecting rod, rotary distributor, alarm unit and hose assembly.
Machine program integration
Front flange options for spindle interfaces and signal integration with the machine program.
Product Video and Typical Workpieces
TK Series Parameters, Indexing Accuracy and Dimensions
The tables below list TK series model data for selection, installation space checks and technical communication.
TK Series Performance Parameters
| Model | Outside Diameter D (mm) | Chuck Bore D1 (mm) | Max Workpiece Size (mm) | Clamping Force (kN) | Stroke (mm) | Indexing Speed (rpm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| TK-168 | 190 | 168 | 136 | 10.6 | 9 | 70 | 15 |
| TK-203 | 216 | 203 | 164 | 11.3 | 15.2 | 82 | 24 |
| TK-225 | 240 | 225 | 190 | 11.3 | 15.2 | 95 | 30 |
| TK-256 | 276 | 256 | 210 | 14.5 | 19.1 | 105 | 42 |
| TK-305 | 330 | 305 | 260 | 14.5 | 19.1 | 130 | 61 |
| TK-400 | 416 | 400 | 350 | 31.4 | 30 | 175 | 120 |
| TK-460 | 490 | 460 | 410 | 31.4 | 30 | 205 | 161 |
| TK-570 | — | 570 | 460 | 56.5 | 42 | — | 306 |
| TK-680 | — | 680 | 560 | 56.5 | 42 | — | 413 |
| TK-850 | — | 850 | 720 | 66.3 | 55 | — | 661 |
| TK-1000 | — | 1000 | 860 | 80.0 | 65 | — | 1298 |
| TK-1200 | — | 1200 | 1060 | 80.0 | 65 | — | 1558 |
Standard indexing divisions are 6×60° and 8×45°; other equal divisions are available on request. Indexing accuracy is 0.003°; repeat positioning is 0.03 mm (0.02 mm high-precision option). TK-168 through TK-460 are standard stock sizes; TK-570 and above are built to order.
System Components
| No. | Component | Function | Notes |
|---|---|---|---|
| 1 | Indexing chuck body | Workpiece clamping and automatic rotary indexing positioning | Main system component |
| 2 | Front flange | Connects to machine spindle end | A2-5 / A2-6 / A2-8 / flat nose spindle interfaces |
| 3 | Telescopic connecting rod | Oil passage from body to rotary distributor | Main system component |
| 4 | Rear flange | Mounts rotary oil distributor at rear end | Main system component |
| 5 | Rotary oil distributor | Distributes hydraulic oil during rotation | For clamping, release and indexing circuits |
| 6 | Indexing alarm mechanism | Machine signal for indexing / clamp completion | Standard; machine stop if cycle is incomplete |
| 7 | Oil hose assembly | Connects distributor to hydraulic system | Main system component |
| 8 | Hydraulic power unit | Provides clamping and indexing pressure | Optional; machine hydraulic system may be used |
KORRETTO can support machine program integration to connect indexing completion signals for automatic indexing cycles.
Selection Notes
- Machine model and spindle end interface
- Target indexing division, such as 6×60°, 8×45° or other equal divisions
- Workpiece diameter, length, clamping position and maximum machined envelope
- Hydraulic pressure, oil circuit interface and rear-end space
- Robot loading clearance if required
- High-precision repeat positioning requirement if applicable
- Cycle time and batch volume
FAQ
What is the TK series hydraulic indexing chuck used for?
The TK hydraulic indexing chuck is used for CNC lathe spindle-side clamping and repeatable angular indexing where model dimensions, clamping force, 6×60° or 8×45° divisions and 0.003° indexing accuracy must be confirmed.
How is the TK series different from the hydraulic auto indexing chuck page?
The hydraulic auto indexing chuck page introduces the automatic indexing application and system-level selection logic. The TK series page focuses on model-based TK hydraulic indexing chuck parameters, indexing accuracy and system components.
What information should I provide for model selection?
Please provide workpiece size, material, clamping method, required indexing angle, spindle or machine interface, hydraulic supply conditions and machining process.
Is this the same as a dividing head or rotary table?
No. The TK series hydraulic indexing chuck 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.