Atlas Copco 3128303930 Sliding Piece
Low-friction sliding component engineered to eliminate lubrication requirements while delivering extended service life in demanding drilling environments
Sliding Component Innovation
Moving parts create friction. Friction consumes energy, generates heat, and causes wear. For decades, engineers addressed friction through lubrication—applying oils or greases between sliding surfaces to reduce contact and dissipate heat. This approach works but creates dependencies. Lubricants require replenishment. They attract contaminants. Temperature extremes affect their properties. The Atlas Copco 3128303930 sliding piece takes a different path—utilizing self-lubricating polymer technology that eliminates external lubrication entirely while achieving friction levels comparable to well-lubricated metal components.
This represents fundamental shift in sliding component design philosophy. Rather than adding lubricants to incompatible materials, the approach employs materials with inherent low-friction characteristics. Polymer molecular structures create naturally slippery surfaces at microscopic scales. No oil films required. No grease accumulation. No contamination attraction. The material itself provides lubricity as an intrinsic property.
Friction Science Fundamentals
Understanding why polymers exhibit low friction requires examining molecular interactions. When two surfaces contact, asperities—microscopic peaks—interlock and resist sliding. Metal asperities cold-weld at contact points, creating adhesive friction requiring substantial force to break. Polymer surfaces behave differently. Their molecular chains slide past each other with minimal resistance. Add specific polymer types with particularly low intermolecular friction, and you achieve surface properties approaching Teflon while maintaining structural strength metals require.
Material Composition Strategy
Creating effective sliding pieces demands balancing contradictory requirements. Low friction needs slippery surfaces. Wear resistance requires hard, tough materials. Load capacity necessitates structural rigidity. Temperature stability across operational ranges adds further constraints. The 3128303930 achieves this balance through multi-component polymer formulations where each ingredient contributes specific properties to the final compound.
Friction Coefficient
0.08-0.12 against steel without lubrication
Wear Rate
4-6 times lower than bronze in dry conditions
Service Life
Typically exceeds 6,000 operating hours
Operational Environment Challenges
Drilling equipment operates in conditions consumer products never experience. Rock dust permeates everything. Water sprays for cooling and flushing. Temperature swings from cold startups to sustained high-load operation. Hydraulic leaks coat nearby components. Each condition challenges component durability. The 3128303930 addresses these through polymer selection resistant to moisture absorption, chemical attack, and temperature-induced property changes.
Consider dust contamination specifically. Traditional lubricated sliding systems suffer dramatically when dust infiltrates. Abrasive particles mix with grease to form grinding compounds that accelerate wear exponentially. Self-lubricating systems eliminate the grease that traps particles. Dust that contacts surfaces typically falls away or gets expelled during movement. When particles do embed, they sink into the polymer matrix rather than acting as three-body abrasives between hard surfaces.
Related Drilling Components
Integrated component solutions for Atlas Copco drilling systems:
Precision Manufacturing Requirements
Low-friction materials deliver benefits only when manufactured to precise dimensional specifications. Excessive clearance allows movement creating impact loads. Insufficient clearance causes binding that negates material advantages. The 3128303930 maintains tolerances within hundredths of millimeters through controlled molding processes and post-molding inspection verifying conformance to specifications.
Surface finish matters equally. While polymers exhibit inherently lower friction than metals, optimized surface textures further reduce resistance and improve wear characteristics. Manufacturing processes create these textures during molding, eliminating secondary finishing operations that add cost without improving performance beyond what proper molding achieves initially.
Installation Procedures
Achieving design performance requires proper installation methodology. Technicians should verify mating surfaces are clean, smooth, and free from burrs or damage that might cut polymer material during assembly. The sliding piece must seat completely before fastener tightening begins. Torque specifications prevent both under-tightening that allows movement and over-tightening that damages the component.
Break-in periods benefit performance. During initial operation, microscopic surface asperities wear to create optimized contact patterns. This burnishing actually reduces friction slightly compared to as-manufactured condition. Typical break-in requires 10-20 operating hours under normal loads.
Maintenance Economics
Eliminating lubrication removes entire categories of maintenance tasks and their associated costs. No scheduled greasing saves labor hours repeatedly throughout equipment life. No lubricant purchases reduce materials consumption. No cleanup of leaked grease eliminates housekeeping tasks. These seemingly small savings accumulate into substantial value over years of operation.
Extended service life provides additional economic benefits. Component replacement frequency decreases. Parts inventory requirements drop. Installation labor reduces proportionally. Equipment availability improves as maintenance intervals extend. Total ownership costs decline even though initial component acquisition might cost more than basic alternatives.
Technical Documentation
Complete specifications, compatibility information, and installation guidance
View 3128303930 Details