The coupling sleeve serves as a crucial link, seamlessly connecting drill rods and shank adapters with its internal threaded sleeve. Widely utilized across a spectrum of construction projects, including open pit mining, underground mining, roadway excavation, anchoring engineering, blast furnace taphole, tunnel engineering, hydropower engineering, quarrying, and more.Structured into two primary categories, the full bridge coupling sleeve and the reducing coupling sleeve, it caters to diverse construction needs. The full bridge coupling sleeve excels in open-air construction, ensuring easy disassembly, a secure connection, and minimal risk of operational setbacks.In contrast, the reducing coupling sleeve is characterized by different threads at its ends, facilitating seamless connections with compatible products under specific conditions, adding a layer of versatility to its applications.Available in a range of thread sizes, including R32, R38, T38, T45, and T51, these coupling sleeves are designed to meet the varied requirements within the construction industry. Choose the optimal coupling sleeve to enhance your drilling efficiency and ensure smooth operations across different projects.
In the world of top-hammer drilling, connection integrity is everything. That’s where T45 Coupling Sleeves make the difference. Engineered for maximum strength, perfect thread engagement, and field-proven durability, T45 Coupling Sleeves are the go-to choice for drill string efficiency and operational uptime in demanding mining, tunneling, and construction projects.
If you're looking for a reliable, wear-resistant solution to extend your rod life and ensure seamless torque transmission, T45 Coupling Sleeves deliver unmatched performance.
T45 Coupling Sleeves are precision-machined connectors used to join two T45 drill rods in top-hammer rock drilling systems. Built from high-grade alloy steel, these sleeves ensure consistent energy transfer from the rock drill to the drill bit, minimizing energy loss and reducing rod wear.
With advanced heat treatment and thread precision, T45 Coupling Sleeves are designed to withstand high-impact forces and abrasive conditions in deep hole drilling.
✅ Standard and Retrac Designs
Choose from standard T45 Coupling Sleeves or retrac designs with ribs for better hole wall reaming and easier rod removal.
✅ High-Strength Alloy Steel
Manufactured from carburized or through-hardened 23CrNi3Mo or similar alloys to deliver extreme toughness and fatigue resistance.
✅ Precision Thread Engagement
Fully machined threads ensure 100% engagement and torque transfer between rods—reducing connection failure risk.
✅ Available Lengths
Common sizes include 210mm, 235mm, and 275mm to match various drilling requirements and rod lengths.
✅ Corrosion & Wear Resistance
Enhanced surface treatment improves longevity in abrasive environments, making T45 Coupling Sleeves ideal for long-term use.
T45 Coupling Sleeves are widely used in:
🪨 Underground mining
🚇 Tunnel excavation
🌉 Hydropower construction
🏗 Surface and quarry drilling
🧱 Slope stabilization and anchoring
Whether you're drilling in granite, limestone, or fractured formations, these sleeves keep your operations connected and running efficiently.
| Parameter | Specification |
|---|---|
| Product Name | T45 Coupling Sleeves |
| Thread Type | T45 rope thread (right-hand/left-hand) |
| Material | 23CrNi3Mo alloy steel |
| Hardness | 55–60 HRC (after heat treatment) |
| Length Options | 210mm / 235mm / 275mm |
| Surface Finish | Black oxide or anti-rust coating |
| Compatibility | T45 drill rods and shank adapters |
All our T45 Coupling Sleeves meet or exceed ISO and international mining equipment standards.
With over 15 years of OEM manufacturing experience, we supply T45 Coupling Sleeves that are:
🔩 Precision-engineered for perfect thread tolerance
🔧 Field-tested for consistent performance under pressure
🏗️ Trusted by mining and construction leaders worldwide
🌍 Globally shipped with fast lead times and competitive pricing
🧰 Customizable for left-hand threads or special lengths
Whether you're sourcing for a distributor network, project procurement, or long-term supply contract, our T45 Coupling Sleeves offer reliability you can count on.
Purchasing T45 Coupling Sleeves is simple and straightforward:
Request a Quote – Contact our sales team with the quantity, thread direction, and length you require.
Get Expert Advice – Our engineers can recommend the right type for your specific application.
Fast Production & Shipping – We maintain inventory and offer rapid delivery worldwide.
After-Sales Support – From installation guidance to warranty claims, we’ve got you covered.
Bulk orders, OEM branding, and international logistics support are available on request.
Don’t let inferior connectors slow down your drilling progress or increase downtime. Choose T45 Coupling Sleeves that deliver superior performance, maximum rod life, and full compatibility with global top-hammer systems.
Whether you're drilling through solid granite or tackling tricky tunneling conditions, our T45 Coupling Sleeves are engineered to keep you connected—and productive.
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