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Description
Lathe reduction sleeve Ø20 mm to 4 mm – precision adapter for boring bars
| Technical data | |
|---|---|
| Shank diameter D | 20 mm |
| Diameter of clamped tool d | 3 mm |
| Overall length L | 100 mm |
Lathe reduction sleeve Ø20 mm to 4 mm – adapter for small boring bars
Lathe reduction sleeve Ø20 mm to 4 mm allows small boring bars with a Ø4 mm shank to be mounted in lathe tool posts with a Ø20 mm bore. The Varel Ø20 mm to 4 mm lathe adapter is a proven solution for precision internal machining on CNC and conventional lathes.
Key benefits of the SHB Ø20 to 4 mm reduction sleeve
- Stable clamping with three hex socket screws — ensures secure tool clamping and eliminates vibration during cutting
- External flat on the Ø19 mm diameter — ensures proper seating in standard lathe tool posts
- Ø4 mm internal bore — compatible with small indexable boring bars and internal machining tools
- High positioning repeatability — enables precision boring of small-diameter holes
- Quick setup changes — tool changes without removing the tool post from the carriage
The Ø20 mm to 4 mm lathe sleeve is suitable for toolrooms and maintenance departments where flexibility in tooling selection is required. The design with three clamping screws ensures tooling system rigidity, improving the finish of machined surfaces. The Ø20 mm to 4 mm lathe sleeve allows existing machinery to be used without investing in additional tool posts, reducing workstation equipment costs.
Frequently asked questions
The sleeve accommodates small indexable boring bars and boring tools with a Ø4 mm shank.
Slide the boring bar shank into the sleeve bore and tighten all 3 hex socket screws evenly until securely clamped.
The sleeve fits tool posts with a Ø20 mm bore and a flat at 19 mm. Check your tool post dimensions before placing an order.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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