China Connecting Drilling Rod and Shank Adapter Bit Adapter Rock Drill Coupling Sleeves Factory, Factories

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China Connecting Drilling Rod and Shank Adapter Bit Adapter Rock Drill Coupling Sleeves Factory, Factories

Product Details

Customization:	Available
After-sales Service:	Repair or Replacement
Warranty:	6 Months

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Product Description

📋 Basic Product Information

Model NO.

Coupling Sleeves

Certification

ISO 9001:2000, ISO 9001:2008

Standard

Surface Treatment

Spray-Paint

Process

Forging

Material

Carbon Steel (23crni3mo)

Thread Options

R25/R32/T38/T45/T51

Color

Red, Black, Yellow, White

Package

Wooden Case (30x30x30cm)

Capacity

500,000 PCS/Month

🔍 Product Description

Used in extension rod connection, its function is to transmit impact energy from the rock-drill piston, as well as rotation torque, into the drill string with no losses. It must withstand and transmit up to 6300 blows per minute from the piston continually, with great endurance and dependability.

Available Sizes: R25, R28, R32, R35, R38, T38, T45, T51, R25-R28, R22-R25, R25-R32, R32-R38, R32-T38.
Length Range: 140mm - 235mm
Packaging: Secure wooden cases or cartons.

📏 Couplings Specifications

THREAD	LENGTH (L)		DIAMETER (D)		Weight
THREAD	mm	In	mm	In	Kg
R22	140	2005-1-2	30	1-3/16	0.45
R25	150	5-29/32	33	1-5/16	0.5
R25	150	5-29/32	35	1-3/8	0.52
R28	150	5-29/32	39	1-17/32	0.6
R32	150	5-29/32	42	1-21/32	0.9
R32	150	5-29/32	44	1-23/32	0.95
R38	170	6-11/16	55	2-5/32	1.75
T38	190	7-1/2	52	2-3/64	1.6
T38	190	7-1/2	55	2-5/32	1.95
T45	210	8-1/4	63	2-15/32	2.75
T45 HD	210	8-1/4	66	2-19/32	3.2
T51	225	8-7/8	72	2-13/16	3.85
T51 HD	225	8-7/8	76	3	4.68

🌉 Couplings - Full Bridge Specifications

THREAD	LENGTH (L)		DIAMETER (D)		Weight
THREAD	mm	In	mm	In	Kg
R25	200	7-7/8	35	1-3/8	0.8
R28	160	6-5/16	39	1-17/32	0.7
R32	200	7-7/8	44	1-23/32	1.5
R32	300	11-13/16	44	1-23/32	2.6
R38	210	8-1/4	55	2-5/32	2.6
T38	205	8-1/16	55	2-5/32	2.31
T45	230	9-1/16	63	2-15/32	3.5
T51	250	9-13/16	72	2-13/16	5.3
T51	250	9-13/16	76	3	6.2

❓ Frequently Asked Questions

What is the primary function of a coupling sleeve?

Coupling sleeves are used to connect extension rods, transmitting impact energy and rotation torque from the rock-drill piston into the drill string with minimal energy loss.

What materials are these coupling sleeves made of?

They are manufactured using high-quality Carbon Steel, specifically 23crni3mo, and undergo a forging process to ensure maximum durability.

Can these sleeves withstand high-frequency impacts?

Yes, they are designed to withstand up to 6300 blows per minute from the piston continually while maintaining dependability.

What thread types are available for different drilling needs?

We offer a wide range of thread types including R25, R28, R32, R35, R38, T38, T45, and T51 to match various drilling equipment.

What is the difference between standard and Full Bridge couplings?

Standard couplings are for general extension, while Full Bridge couplings provide a middle stop to ensure the rods are seated correctly, often used in more demanding drilling environments.

How are the products packaged for international shipping?

Products are typically packed in sturdy wooden cases or reinforced cartons to prevent damage during transit. The standard package size is 30.00cm * 30.00cm * 30.00cm.