PRODUCT DETAILS

Stable Small-Bore Machining Starts with the Right Boring Bar

The MTR Series solid carbide boring bars are engineered for precise internal boring in small diameters where rigidity, access, and dimensional consistency matter most.

When internal machining space is limited, tool stability becomes critical. The MTR Series is built for small-hole boring applications where conventional tools may struggle with access, rigidity, or consistent bore quality. Whether you are a distributor stocking for resale or a machining factory seeking repeatable results, the MTR series provides a practical, high-performance solution.

Why Professionals Choose the MTR Series:

Built for Stability: Solid carbide construction minimizes vibration in restricted internal spaces.
Superior Access: Compact cutting head design allows for stable machining in narrow bores.
Precision Finishing: Ideal for bore correction and maintaining tight dimensional tolerances.
Flexible Supply: We support both standard orders and drawing-based OEM customization.
Application Matching: Technical support available to match tools to your specific material and machine setup.

Solving Your Toughest Internal Boring Challenges

Problem: Unstable cutting in small diameters

Our solid carbide body provides the necessary rigidity to prevent deflection and chatter.

Problem: Poor surface finish or inconsistency

The MTR geometry is optimized for controlled, repeatable cutting to ensure high-quality bore surfaces.

Professional Support for Our Global Partners

For Distributors & Wholesalers: We provide a dependable product line to strengthen your portfolio, supported by reliable lead times and professional technical data for your international clients.

For CNC Machining Factories: Achieve better consistency in medical, automotive, and electronics parts with our application-specific tool matching and consistent quality control for global manufacturing standards.

Customization & OEM Support

Need a non-standard solution? We provide full customization based on your technical drawings, including adjustments to shank diameter, overall length, minimum bore range, and coating options tailored to your workpiece material.

MTR Series Specifications

MTR Series Solid Carbide Micro Boring Bars Specifications

Model	F	L1	S	R	D	L2	Min Hole
MTR-1-4L-R0	0.85	4	0.15	0	4	40	1.0
MTR-1-4L-R0.5	0.85	4	0.15	0.1	4	40	1.0
MTR-1.5-5L-R0.05	1.3	5	0.2	0.05	4	40	1.5
MTR-1.5-5L-R0.1	1.3	5	0.2	0.1	4	40	1.5
MTR-2-6L-R0.05	1.8	6	0.25	0.05	4	40	2.0
MTR-2-6L-R0.1	1.8	6	0.25	0.1	4	40	2.0
MTR-2.5-7L-R0.05	2.3	7	0.3	0.05	4	40	2.5
MTR-2.5-7L-R0.1	2.3	7	0.3	0.1	4	40	2.5
MTR-3-6L-R0.05	2.7	6	0.3	0.05	4	50	3.0
MTR-3-6L-R0.1	2.7	6	0.3	0.1	4	50	3.0
MTR-3-6L-R0.2	2.7	6	0.3	0.2	4	50	3.0
MTR-3-10L-R0.05	2.7	10	0.3	0.05	4	50	3.0
MTR-3-10L-R0.1	2.7	10	0.3	0.1	4	50	3.0
MTR-3-10L-R0.2	2.7	10	0.3	0.2	4	50	3.0
MTR-3-15L-R0.1	2.7	15	0.3	0.1	4	50	3.0
MTR-3-15L-R0.2	2.7	15	0.3	0.2	4	50	3.0
MTR-3.5-12L-R0.1	3.3	12	0.3	0.1	4	50	3.5
MTR-3.5-12L-R0.2	3.3	12	0.3	0.2	4	50	3.5
MTR-4-8L-R0.05	3.7	8	0.4	0.05	4	50	4.0
MTR-4-8L-R0.1	3.7	8	0.4	0.1	4	50	4.0
MTR-4-8L-R0.2	3.7	8	0.4	0.2	4	50	4.0
MTR-4-10L-R0.1	3.7	10	0.4	0.1	4	50	4.0
MTR-4-10L-R0.2	3.7	10	0.4	0.2	4	50	4.0
MTR-4-15L-R0.05	3.7	15	0.4	0.05	4	50	4.0
MTR-4-15L-R0.1	3.7	15	0.4	0.1	4	50	4.0
MTR-4-15L-R0.2	3.7	15	0.4	0.2	4	50	4.0
MTR-4-22L-R0.1	3.7	22	0.4	0.1	4	50	4.0
MTR-4-22L-R0.2	3.7	22	0.4	0.2	4	50	4.0
MTR-4-30L-R0.2	3.7	30	0.4	0.2	4	60	4.0
MTR-5-12L-R0.1	4..7	12	0.5	0.1	5	50	5.0
MTR-5-12L-R0.2	4.7	12	0.5	0.2	5	50	5.0
MTR-5-20L-R0.1	4..7	20	0.5	0.1	5	50	5.0
MTR-5-20L-R0.2	4.7	20	0.5	0.2	5	50	5.0
MTR-5-22-R0.1	4..7	22	0.5	0.1	5	50	5.0
MTR-5-22L-R0.2	4.7	22	0.5	0.2	5	50	5.0
MTR-5-30L-R0.2	4.7	30	0.5	0.2	5	75	5.0
MTR-6-12L-R0.1	5.7	12	0.5	0.1	6	50	6.0
MTR-6-12L-R0.2	5.7	12	0.5	0.2	6	50	6.0
MTR-6-20L-R0.1	5.7	20	0.5	0.1	6	50	6.0
MTR-6-20L-R0.2	5.7	20	0.5	0.2	6	50	6.0
MTR-6-20L-R0.4	5.7	20	0.5	0.4	6	50	6.0
MTR-6-22L-R0.1	5.7	22	0.5	0.1	6	50	6.0
MTR-6-22L-R0.2	5.7	22	0.5	0.2	6	50	6.0
MTR-6-35L-R0.2	5.7	35	0.5	0.2	6	75	6.0
MTR-7-25L-R0.2	6.5	25	0.5	0.2	7	60	7.0
MTR-8-30L-R0.2	7.5	30	0.5	0.2	8	60	8.0
MTR-8-30L-R0.4	7.5	30	0.5	0.4	8	60	8.0
MTR-8-45L-R0.2	7.5	45	0.5	0.2	8	75	8.0
MTR-10-45L-R0.2	9.5	45	0.5	0.2	10	75	10.0