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Litian Heavy Industry Machinery Co., Ltd
Litian Heavy Industry Machinery Co., Ltd
R28 Retrac Button Bit
R28 Retrac Button Bit

R28 Retrac Button Bit

Specification of R28 Retrac Button Bit

DiameterButtonsFlushing HoleWeightModel No.

[mm]
[in]		Gauge
[No.] × [mm]		Front
[No.] × [mm]		Side
[No.]		Front
[No.]
[kg]
451 3/4"6 × 93 × 8131R28-459YFP
512"6 × 103 × 9131.35R28-519YFP



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Button Bit
Threaded Button Bit Retrac Button Bit Reaming Bit
Drill Rod
Extension Rod MF Rod Drifter Rod Drill Tube & Guide Tube
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Shank Adapter HL/RD/HLX Shank Adapter COP/BBC Shank Adapter HD/PD Shank Adapter HC Shank Adapter YH Shank Adapters Impact Shanks
Coupling Sleeve
Small Hole Drilling Tools
Tapered Button Bits Tapered Drill Rods Integral Drill Rods Shank Rods
TBM Cutter
TBM Disc Cutter
Single Disc Cutter Double Disc Cutter Twin Disc Cutter Triple Disc Cutter Disc Cutter Ring Disc Cutter Components
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Litian Updates
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Litian Updates
Apr 25-2026
Best Practices for Button Bit Maintenance and Regrinding in Hard Rock Drilling
Hard rock drilling places extreme demands on button bits. In abrasive granite, quartzite, or basalt formations, the combination of high impact, abrasion, and thermal stress can quickly degrade perform...
Apr 18-2026
Best Drilling Tools for Underground Tunneling Projects
Underground tunneling projects demand drilling tools that deliver precision, reliability, and high performance in confined spaces, variable rock conditions, and challenging environments. From drill-an...
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What is the Difference Between a Reamer Bit and a Drill Bit?
Litian Rock Drilling Tools Manufacturers

Litian is a professional manufacturer focused on the production of rock drilling tools and excavation tools.

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Products
Top Hammer Drilling Tools
Button Bit Drill Rod Shank Adapter Coupling Sleeve Small Hole Drilling Tools
TBM Cutter
TBM Disc Cutter Soft Ground Cutter
Raise Boring Cutters
Kerf Roller Cutter Random Roller Cutter
Hot Sales
Application
Mining Tunneling & Underground Project Construction Drill And Blast Quarrying & Aggregate Hydropower Project

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