- Perfectly engineered with a 20mm shank diameter and 200mm length, designed to fit standard VCMT 1604 or VCXT 1604 (35° diamond carbide inserts) for high-efficiency internal boring and profiling.
- Made of high-strength alloy steel with advanced quenching and hardening heat treatment. It features excellent vibration dampening properties, ensuring a superior surface finish even during deep-hole internal turning.
- The surface is treated with an industrial-grade matte/smooth coating to resist corrosion, rust, and wear, significantly extending the service life of the tool holder.
DESCRIPTION
S20R-SVQCR16 CNC Lathe Internal Boring Bar Turning Tool Holder
Maximize your internal turning and profiling efficiency with our high-precision S20R-SVQCR16 Indexable Boring Bar. Designed specifically for professional CNC lathe machining, this 20mm shank steel tool holder offers exceptional rigidity and stability, ensuring highly accurate deep-hole boring operations.
Product Specifications
| Parameter | Specification |
| Model | S20R-SVQCR16 |
| Shank Diameter (d) | 20 mm |
| Overall Length (L) | 200 mm |
| Min. Bore Diameter (Dmin) | 25 mm |
| Approach Angle | 107.5° (Right Hand) |
| Clamping Screw | M4 x 10 |
| Wrench | T15 Torx |
| Applicable Insert | VCMT 1604 / VCXT 1604 |
| Material | High-Strength Alloy Steel |
CNC Inserts - Frequently Asked Questions
1. How do I choose the right grade for my specific machining application?
Choosing the correct grade is crucial for tool life and performance. We provide a comprehensive Grade Cross-Reference Chart that maps our CD Carbide grades to major international brands like Sandvik, Mitsubishi, and Kyocera. If you are unsure, simply provide us with the workpiece material (P, M, K, S, H) and machining conditions, and our engineers will recommend the best solution.
2. Can you provide customized CNC tools based on our drawings?
Yes. As a factory-direct manufacturer, we specialize in bespoke engineering. Whether you need non-standard dimensions, specific chipbreakers, or customized coatings for unique alloys, our technical team can develop products based on your technical drawings (PDF/STEP) or physical samples.
3. Do you offer free samples for testing before bulk orders?
We understand that "trial cutting" is the only way to verify tool stability. We offer sample packs for professional buyers to test performance on their own CNC machines. Please contact our sales team with your machine specifications and the material you are processing to request your trial samples.
4. How do you ensure the quality consistency of your carbide inserts?
Our quality control is integrated into every step of the production process in Zhuzhou. We use high-purity tungsten carbide powder and advanced PVD/CVD coating equipment. Each batch undergoes rigorous inspection, including microscopic edge analysis and hardness testing, to ensure that the performance of the 1,000th insert is identical to the 1st.
5. What is the typical lead time for international B2B orders?
For standard models in stock (such as WNMG, CNMG, etc.), we usually ship within 3-5 business days. For customized tools or large-volume OEM orders, the production cycle typically ranges from 2 to 4 weeks, depending on the complexity of the design and coating requirements.
6. Are you a manufacturer or a trading company?
We are a direct manufacturing enterprise based in Zhuzhou, the hunan of China’s tungsten carbide industry. By cutting out the middleman, we provide factory-direct pricing and faster technical support. This allows us to offer more flexible MOQs (Minimum Order Quantities) for small-to-medium-sized distributors and specialized machine shops.
