Products Description

SDJ series small diameter tungsten steel anti-vibration fine boring tools are special tools with external tooth and internal tooth specifications, designed for high-precision machining of slender small holes. Suitable for CNC machining centers, precision lathes and other equipment, focusing on small diameter, slender and deep hole precision boring scenarios.
The tool body is integrally formed of high-purity tungsten steel, with high density and sufficient hardness. Equipped with exclusive anti-vibration structure design, it effectively suppresses cutting vibration during small-diameter long-overhang machining, eliminates chatter marks, and ensures ultra-smooth hole surface and micron-level dimensional tolerance.
Available in two specifications: external tooth and internal tooth, adapting to different clamping and processing needs. With LBK standard universal interface, it can flexibly connect with BST series anti-vibration boring bars and extension boring bars, featuring easy assembly and high coaxiality. Widely used in high-precision boring of slender small holes for small precision parts, electronic components, micro molds and thin-wall parts.

Anti-Vibration Fine Boring

Features

Product Core Advantages & Cost-Saving Practical Highlights

High-Purity Tungsten Steel Anti-Vibration Body

Integrally processed with high-purity tungsten steel, featuring high hardness and strong wear resistance. Equipped with exclusive anti-vibration structure, it ensures stable small-diameter long-overhang machining without vibration or chatter marks, greatly improving processing stability and product qualification rate.

Dual Specifications: External Tooth & Internal Tooth

Divided into two exclusive specifications: external tooth and internal tooth, accurately matching different clamping methods and processing conditions. No additional accessories are needed, easy to use, and suitable for multi-scenario small-diameter precision processing needs.

LBK Standard Universal Interface

Adopting LBK standard universal interface, perfectly compatible with BST series anti-vibration boring bars and extension boring bars. It can flexibly expand the processing range without replacing the entire tool set, reducing procurement and use costs.

Specialized for Small-Diameter Precision Machining

Designed specifically for small-diameter and slender holes, with a compact structure that can process micro-cavities and slender hole channels. Precise adjustment and smooth cutting meet the strict processing requirements of micro precision parts.

Application Fields

Widely Adaptable Industries & Various Processing Working Conditions

Micro Precision Parts Machining

Suitable for high-precision boring of small-diameter slender holes in micro shafts and micro sleeves, strictly controlling dimensional tolerance and surface finish to meet the assembly accuracy requirements of micro parts.

Electronic Components Processing

Used for precision finishing of small inner holes in electronic components and micro sensors. Dual specifications (external tooth / internal tooth) adapt to different clamping needs, ensuring stable and flawless processing.

Micro Mold Cavity Machining

Suitable for deep hole boring of micro mold inserts and micro cavities. The compact structure can go deep into micro cavities, ensuring the processing accuracy and consistency of small mold holes.

Thin-Wall Precision Parts Machining

For small-diameter processing of thin-wall small parts, the high-rigidity tungsten steel tool body has strong anti-vibration performance, avoiding thin-wall deformation during processing and ensuring processing accuracy and product integrity.

Main Technical Parameters

anti-vibration tungsten steel boring tool

Type	Boring Range φ(Dmm)	Shank Diameter D	Tool Diameter d	Boring Head Length L2	Total Length L	Effective Length L2	Compatible Insert
SDJ0809-WT	8-9	φ7 Integrated Tungsten Steel Bar	φ7.3	-	120/98/82	80/58/42	Universal TBGT06
SDJ0910-WT	9-10	φ8 Integrated Tungsten Steel Bar	φ8.3	-	130/110/95	90/70/55	Universal TBGT06
SDJ1012-WT	10-12	φ9 Integrated Tungsten Steel Bar	φ9.3	29	137/120/95	100/80/55	Universal TBGT06
SDJ1214-WH	12-14	φ11 Tungsten Steel Bar	φ11	35	160/134/112	120/94/72	Universal TPGH09
SDJ1417-WH	14-17	φ13 Tungsten Steel Bar	φ13	38	180/162/124	140/123/84	Universal TPGH09
SDJ1621-WH	16-21	φ15 Tungsten Steel Bar	φ15	38	192/168/136	150/128/96	Universal TPGH09

Note

The above models and lengths can be customized to 4x, 5x, 6x, 8x, 10x effective length of integrated high-speed steel & tungsten steel tools. Please contact local distributors for details.
Example: SDJ0809-GT-120L, Total length 120mm - Shank clamping length 40mm = Effective depth 80mm. Effective length 80mm + Shank clamping length 40mm = Total length 120mm.

FAQ

Common Existing Problems & Processing Troubles In Boring Industry

Q: Q1: During small-diameter slender hole machining, ordinary tool bodies are prone to vibration and severe chatter marks, making it impossible to meet the required inner wall finish?

A: A1: Ordinary tool bodies have insufficient hardness and no exclusive anti-vibration structure, leading to obvious resonance during small-diameter long-overhang machining, which easily causes chatter marks and dimensional deviations. SDJ adopts a high-purity tungsten steel integrated tool body with exclusive anti-vibration design, effectively suppressing vibration, eliminating chatter marks, and ensuring ultra-smooth inner wall finish.

Q: Q2: Poor clamping adaptability for small-diameter processing, mixed use of external tooth and internal tooth specifications leads to processing deviations?

A: A2: Conventional small-diameter boring tools have no clear specification distinction. Mixed use of external tooth and internal tooth specifications easily causes loose clamping and coaxiality deviation, affecting processing accuracy. SDJ is divided into two exclusive specifications: external tooth and internal tooth, accurately matching different clamping methods, ensuring firm clamping without deviation.

Q: Q3: Non-universal interfaces of small-diameter boring tools cannot connect with extension bars, limiting deep cavity small hole processing?

A: A3: Ordinary small-diameter boring tools have non-standard interfaces, which cannot be adapted to extended anti-vibration boring bars, making it difficult to complete deep cavity small hole processing. SDJ adopts LBK standard universal interface, which can flexibly connect with BST extension bars, easily expanding the deep cavity processing range.

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