Guide outlines breaker maintenance and spare parts for granite mining

A Chinese pneumatic breaker supplier has published a maintenance guide for TPB-40 and TPB-60 tools used in granite mining, covering daily inspections, wear parts, chisel replacement and piston servicing. The release also recommends that small mine operators buy a full spare-parts kit with the main unit to avoid downtime.

Why it matters: - Granite mining sites face heavy dust, high wear and frequent downtime risks. - Routine maintenance and the right replacement parts can extend breaker life and reduce repair delays. - The guide focuses on TPB-40 and TPB-60 pneumatic breakers used in small granite operations.

What happened: - Tianjin Shenglida Machinery Equipment Co., Ltd. published a guide on pneumatic breaker operation, maintenance and wear parts. - The release was dated September 21, 2026, and originated in Langfang, Hebei, China. - The guide covers inspection steps before use, lubrication during operation, end-of-shift care, chisel replacement, bushing wear, piston replacement and spare-parts buying advice.

The details: - Before each use, operators should inspect the air inlet connector, air hose and quick coupling for leaks. - Compressed air should stay dry and clean to keep water and sand out of the tool body. - Dedicated pneumatic tool lubricating oil should be added through the air inlet. - Operators should check the chisel and front sleeve for heavy wear. - Bolts, nuts and retaining clips should be tightened. - The chisel shank should be checked for wear, cracks or deformation. - Diesel or waste engine oil should not be used as a substitute for pneumatic lubricant. - During operation, an air service unit or oil mist lubricator should be installed if the setup lacks an automatic oil feeder. - For continuous mining work, a running oil mist feeder is described as more reliable than manual oil drops. - The breaker should run at the rated working pressure specified by the equipment manufacturer. - Excess pressure accelerates wear on pistons, valves, seals and cylinder assemblies. - After daily shifts, the air compressor should be shut down and residual pressure released from the hose. - The air hose should be disconnected, and a small amount of pneumatic tool oil should be added to the inlet port. - The tool should then run briefly at idle to spread lubricant through internal components. - The outer casing should be wiped clean. - Chisel, bushing and retaining clips should be inspected after each shift. - If the breaker will sit idle, the air inlet should be covered to block dust. - Dust protection at the air inlet is critical on mining sites. - Common wear parts for TPB-40 and TPB-60 breakers include the chisel, chisel bushing, front sleeve, retaining clip, lock pin, piston, valve body, air distribution valve, springs, O-rings, cylinder, rear cover and air inlet connector. - Chisels and bushings are described as the simplest parts to replace on site. - To replace a chisel, the air supply must be cut off completely before the hose is depressurized. - The retaining clip or lock pin should then be removed. - Different models may use retaining clips, pins or spring locks. - If a chisel is stuck, the tool body should not be hit with a heavy sledgehammer. - A stuck chisel may signal a bent chisel, worn bushing, burrs on the shank or dust and corrosion inside the tool. - A new chisel should match the breaker model and be coated with suitable pneumatic lubrication grease before installation. - After installation, the retaining clip or lock pin should be reinstalled and the chisel should move freely by hand. - Bushing wear should be checked by inserting the chisel and testing radial movement. - The guide warns that worn bushings can cause excessive chisel play, reduced impact power, abnormal stress on the piston and cylinder, and shorter tool life. - Wear limits should be checked against the manufacturer’s service dimension standard, because clearances vary by brand and model. - Piston replacement is described as intermediate-level maintenance. - The air supply should be isolated and the circuit fully depressurized before piston work begins. - The rear cover, springs and valve assemblies should be removed first. - The cylinder should be disassembled and the worn piston extracted. - The inner cylinder wall and the new piston’s dimensions and surface condition should be inspected. - All components should be cleaned, and pneumatic grease or oil should be applied to lubrication points. - The new piston should be installed in the correct orientation, with O-rings and seals replaced as needed. - The breaker should be reassembled in the specified sequence and tested with low-pressure air before full operation. - If scratches are present on the cylinder wall, replacing only the piston will not solve the problem. - In that case, the guide says a full overhaul may be needed, including the piston, cylinder, valve set and seals. - For small granite mines, the release recommends buying a complete wear-parts kit with the main breaker unit rather than purchasing only the machine. - The recommended package includes 10 to 24 chisels, 2 to 4 chisel bushings, 2 to 4 sets of retaining clips and lock pins, 2 piston assemblies, 2 valve sets, 2 to 3 sets of O-rings and sealing kits, assorted springs, air hose connectors, an air inlet filter, special service tools, exploded component drawings, a maintenance manual, and part numbers and dimension sheets. - The company says this approach helps avoid downtime when repairs are needed but matching pistons or seals are unavailable.

Between the lines: - The release is designed as both a maintenance guide and a sales tool. - The emphasis on wear parts, service dimensions and complete kits suggests the company is targeting operators that need fast field repairs with limited local inventory. - The warning against overpressure and poor lubrication points to the main failure modes that can shorten breaker life.

What's next: - Mine operators using TPB-40 or TPB-60 breakers can use the checklist as a daily maintenance routine. - Buyers sourcing new equipment are being pushed toward factory-supplied spare parts packages at the time of purchase. - The release also points users to direct factory support for spare parts, manuals and drawings.

The bottom line: - The message is simple: protect the air system, manage wear parts early and keep a complete spare kit on hand if you want fewer shutdowns in granite mining.