China R28/SR28 Button bit Manufacturers, Factory

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China R28/SR28 Button bit Manufacturers, Factory

Drifting and tunnelling tools include rods, shank adapters, couplings and bits.

R28/SR28 Button Drill Bits

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Product Description

Drifting and tunnelling tools are essential components in mining and construction, specifically engineered for high-performance drilling. Our comprehensive range includes high-quality rods, shank adapters, couplings, and bits.

We provide a wide selection of 11 thread types to suit various operational needs: SR22, SR25, R25, SR28, R28, SR32, R32, SR38, R38, and T35. Available diameters range from 38mm to 127mm, fully compatible with button bits, cross bits, and reaming products.

Key Advantages

Premium Materials

The drill bit body is forged from high-grade 50R61 steel for maximum durability.

High Performance Carbide

Equipped with YK05 or T6 carbide heads for superior penetration rates.

Strong Productivity

High capacity production reaching 50,000 pieces per month to ensure supply stability.

Standard Packaging

Products are securely packed in sturdy wooden cases or cartons for safe international transit.

Product Display: R28/SR28 Series

Technical Specifications: R28/SR28 Button Bit

Button Bit Profile	Carbide Dimension				Dimensions D		Flushing Hole
Button Bit Profile	Gauge [No.]	Gauge [mm]	Front [No.]	Front [mm]	[mm]	[in]	Front	Side
Type 7	5	8	2	7	36	1 13/32″	1	3
Type 7	5	8	2	8	38	1 1/2″	1	3
Type 7	5	9	2	7	38	1 1/2″	1	1
Type 7	5	9	2	9	41	1 5/8″	1	1
Type 7	5	9.5	2	8	43	1 11/16″	1	1
Type 7	5	10	2	9	45	1 3/4″	1	1
Type 7	5	11	2	9	48	1 7/8″	1	1
Type 8	6	8	2	8	43	1 11/16″	2	0
Type 8	6	9	2	9	45	1 3/4″	2	0
Type 9	6	9	3	8	45	1 3/4″	3	1
Type 9	6	9	3	9	48	1 7/8″	3	1
Type 9	6	10	3	9.5	51	2″	3	1

Frequently Asked Questions

1. What materials are used in your drifting and tunneling bits?

Our drill bit bodies are manufactured using high-strength 50R61 steel, and the cutting heads feature premium YK05 or T6 tungsten carbide for excellent wear resistance.

2. Which thread types are available for these tools?

We offer 11 standard thread types including SR22, SR25, R25, SR28, R28, SR32, R32, SR38, R38, and T35 to ensure compatibility with most drilling rigs.

3. What is the diameter range for your button bits?

Our standard product range covers diameters from 38mm up to 127mm, with specific R28 series bits ranging from 36mm to 51mm.

4. How are the products packaged for shipping?

To prevent damage during transit, products are packed in robust wooden cases or reinforced cardboard cartons, depending on the order size and requirement.

5. What is your monthly production capacity for these tools?

We maintain a high productivity rate of approximately 50,000 pieces per month to meet large-scale industrial demands and ensure timely delivery.

6. Can these bits be used for reaming?

Yes, our drifting and tunneling tools are designed for versatile use and can be effectively used with button bits, cross bits, and various reaming products.