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R28 Coupling Sleeves

Coupling sleeve is used to connect drill rod and drill rod, and drill rod and shank adapter, and has a sleeve with internal thread. It’s widely used in open pit mining, underground mining, roadway excavation, anchoring engineering, blast furnace taphole, tunnel engineering, hydropower engineering, quarrying, and other construction projects.

According to the structure, it includes a full bridge coupling sleeve and a reducing coupling sleeve.

Full bridge coupling sleeve: it is used for open-air construction, easy to dismantle, stable connection, and little risk of stuck.

Reducing coupling sleeve: Different thread at the ends to connect matchable products under specific conditions.

Thread size: R32, R38, T38, T45, T51.

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Product Details

Coupling Sleeve is a high-performance coupling sleeve designed for mechanical systems, dedicated to providing outstanding durability and reliability. Whether in industrial production lines or transportation equipment, Coupling Sleeve ensures the smooth operation of mechanical transmission systems, offering comprehensive protection for your equipment.

Product	Coupling Sleeves
Other Names	Coupling sleeves,Drill bit adapter,Rock drill tools,Tophammer drill tools,Drifter drill tools,Coupling,Drill rod couplings,Drill coupling sleeves
Material	23CrNi3Mo
Application	Tunnelling, Mining, Quarrying, Ore Mining,Blasting and Infrastructure Construction,Facedrilling and Bolting, Bench Drilling, Production drilling, Long hole drilling, Drifting.
Thread	R25, R32, R35, R38, T38, T45, T51
Coupling Type	Full bridge coupling sleeve Reducing coupling sleeve(Ctossover couplings,Adapter couplings,Reduction couplings,Reducer coupling) Standard couplings(Semi bridge couplings)
Length	150mm~235mm
Diameter	33mm~72mm
Custom Design	Size,Color,Diameter,Thread,Length

Coupling	Length		Diameter		Thread	Weight approx kg	TIANYUE P/N
Coupling	mm	inch	mm	inch	Thread	Weight approx kg	TIANYUE P/N
Coupling sleeves	150	5 7/8	44	1 3/4	R32	1.0	31-R32-44-150-23
	150	5 7/8	40	1 37/64	R28	0.9	31-R28-40-150-23
	170	6 3/4	55	2 5/32	R38	2.0	31-R38-55-170-23
Coupling sleeves of different diameter	160	6 5/16	45	1 3/4	R28-R32	1.2	33-R28/R32-45-160-23
Coupling sleeves of different diameter	160	6 5/16	56	1 13/64	R28-R38	2.5	33-R28/R38-56-160-23

Features and Benefits:

High-Strength Material: Coupling Sleeve is made from high-quality, high-strength materials, ensuring excellent performance under high loads and high-speed conditions. It withstands challenges in various working conditions, extending the lifespan of your equipment.
Precision Manufacturing Process: We employ advanced manufacturing processes, ensuring each Coupling Sleeve undergoes strict quality control. Precision machining guarantees the accurate matching of the coupling sleeve, reducing friction and improving transmission efficiency.
Outstanding Wear Resistance: Coupling Sleeve exhibits exceptional wear resistance, effectively reducing part wear and lowering maintenance costs. It maintains stable performance even during extended periods of operation.
Easy Installation and Maintenance: Designed to be simple and compact, Coupling Sleeve is easy to install. Additionally, its low maintenance requirements minimize the overall maintenance costs, ensuring your production line remains highly efficient.
Wide Applicability: Coupling Sleeve is suitable for various mechanical transmission systems, including industrial production equipment, transportation equipment, and other critical machinery. Its versatility and wide applicability make it the preferred choice across industries.

Coupling Type
	R：R25,R28,R32,R38
	T:T38,T45,T51

Technical Specifications:

Material: High-strength alloy steel
Diameter Range: Suitable for different coupling diameters
Temperature Resistance: -40°C to +120°C
Torque Transmission Range: Applicable to various working conditions

Actual pictures of drill rods
	R25,R28,R32,R38
	T38,T45,T51

Application Areas:

Coupling Sleeve is widely used in various industries, including manufacturing, oil and gas, transportation, and more. Whether for the construction of new projects or the upgrade of existing equipment, Coupling Sleeve is the ideal choice for enhancing the performance of mechanical transmission systems.

Rod Process Flow：

Coupling Sleeves

About us：

Coupling Sleeves

Packing：

Coupling Sleeves

FAQ

Q1: Are you a manufacturer or a trade company?

A: We are a professional manufacturer of rock drilling tools. Our products include Top Hammer

Drill rods, Drill bits, Taper button bits and taper rods, DTH Bits and DTH rods, etc.

Q2: How can I get after-sales services?

A: Free replacements will be provided once the problems are caused by our product quality.

Q3: How is your quality control?

A: We have our own experienced QC team. There will be strict inspections for every order before

shipping out.

Q4. How can we trust your company?

We support Alibaba trade insurance. Protecting products quality, shipment on time and your

covered amount.We are alibaba trade assurance gold supplier and have more than 10 years

manufacturing experience of drill rods.

Q5. Quality control:

Each production process have quality inspector to check the quality . And we have a very strict

factory standard. There will also be strict inspection and testing for every order before shipping out.

Choose Coupling Sleeve for reliability and longevity. We are committed to providing you with excellent products and services, ensuring that your mechanical equipment maintains efficient and reliable operation at all times.

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