• Model NO.：R25, R32, R38, T38, T45, T51
• Material：High Manganese Steel
• Condition：New
• Brand：Prodrill
• Thread Type：R22, R25, R28, R32, R38, T38, T45, T51
• Type：Semi-Bridge
• Length：190mm,210mm
• Transport Package：Wood Package
• Specification：CE, SGS
• Trademark：PRODRILL
• Origin：China
• HS Code：82071990
• Production Capacity：1000pec,Months
• Package size per unit product：22.00cm * 10.00cm * 5.00cm
• Gross weight per unit product：2.600kg

Basic Info.

Model NO. R25, R32, R38, T38, T45, T51 Material High Manganese Steel Condition New Brand Prodrill Thread Type R22, R25, R28, R32, R38, T38, T45, T51 Type Semi-Bridge Length 190mm/210mm Transport Package Wood Package Specification CE, SGS Trademark PRODRILL Origin China HS Code 82071990 Production Capacity 1000pec/Months

Packaging & Delivery

Package size per unit product 22.00cm * 10.00cm * 5.00cm Gross weight per unit product 2.600kg

Product Description

Coupling sleeves, other name is Coupling, when using rock drills with male shank adapters and a conventional drifter rod, a coupling is required to join the adapter to the rod, ensuring the ends touch for efficient energy transmission. Couplings are also used to connect several rods to each other in the same way. Couplings have a middle stop to prevent over-threading on to the drill rod. We can manufactures semi-bridge, full bridge coupling sleeves for the percussive tools.

We can manufactures semi-bridge, full bridge coupling sleeves for the percussive tools.
Semi-Bridge Coupling sleeve
- Small non-threaded bridge in the center
- Steel cannot thread past bridge area
- Smaller diameter steel end portions fit together in the centre bridge area of the coupling
- Semi-bridged couplings are most suited to high torque machines
- Most rope and T threaded couplings are semi-bridged

Full-Bridge Coupling sleeve
- Eliminates the potential for the coupling to creep along the threaded joints
- Typically used in surface applications
- Better uncoupling characteristics and tend to maintain tighter joints
- Less chance of jamming
- Best suited to machines equipped with independent rotation (i. E., S36IR rock drill)





Main Products:
1-12 inch middle-low/high air pressure DTH hammers & bits
Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling
Eccentric overburden drilling Equipment
Hole opener bit
Rock thread bit (R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, GT60)
Extension Rod, M/F Rod, M/m Rod, Drift Rod,
Shank adapter, coupling sleeves and all kinds of adapters

Advantages:
Compared with the oversea brands, our advantages are bellowing:
A. Our products can match over 95% against the original products
B. Price are competitive against the famous brands and best quality against the small factory



About Us:
1. Our factory has been specialized in manufacturing drilling tools and spare parts for over 10 years.
2. We have advanced technology and equipment.
3. Our technician has more than 13 year's professional working experience.
4. Rock drilling tools are exported throughout the world. Main market: Norway, Turkey, USA, Canada, Australia, Brazil, Uruguay, Iran, Philippines, Thailand, India, etc.

Product Name:	coupling sleeve
Description:	coupling sleeve use to connect several rods to each other
Material:	Alloy steel bar
MOQ:	5pcs
Type	full-bridge,semi-bridge,same diameter etc
Thread type	R22,R25,R28,R32,R38,T38,T45,T51
Diameter	33mm-76mm
Length	140mm-250mm
Color	Gold, Red