Industry Information

I. Introduction As a key component for achieving precision linear motion, linear guides have been widely used in modern industrial automation manufacturing with their outstanding advantages of high precision, high rigidity, low friction, and strong bearing capacity. With the continuous development of science and technology and the continuous improvement of industry demand, linear guides are […]

I. Introduction With the continuous development of industrial technology, the performance requirements for mechanical parts are increasing.Oil-free bushings (also known as self-lubricating bushings) are gradually replacing traditional bearings and bushings that require lubrication due to their advantages such as maintenance-free, low friction, and wear resistance, and have become one of the important parts in various

Analysis of the advantages and disadvantages of oil-free bushings Oil-free bushings (also known as self-lubricating bushings or oil-free bearings) are mechanical parts that do not require or require very little lubricating oil to operate. They are widely used in automobiles, mechanical equipment, home appliances, power tools, and engineering machinery.With the increasing requirements for energy conservation,

1.Core advantages Ultra-high precision： Repeat positioning accuracy can reach ±0.5μm (ultra-precision grade) Eliminate the creeping phenomenon (Stick-slip effect) of traditional sliding guides Application case: Semiconductor lithography machine workbench positioning Low friction and high efficiency： Friction coefficient is only 0.001-0.005 (1/50 of sliding guides) Drive power is saved by more than 30%Data comparison: Servo motor power

Definition A linear guide is a mechanical guide device that converts rotational motion into high-precision linear motion. It consists of a guide rail (fixed component) and a slider (moving component). It achieves low-friction, high-rigidity linear displacement through the cyclic motion of rolling elements (steel balls/rollers). The core function is to provide precise guidance and load-bearing

Typical application areas Construction machinery: Excavator joints, hydraulic cylinder support points. Crane pulleys, track rollers. Automotive industry: Chassis suspension system, gearbox guide bushings.Electric vehicle battery pack shock absorber components. Agricultural equipment: Harvester drive shaft, seed drill connecting rod. Industrial automation: Robot joint bearings, conveyor rail supports. Food and medical equipment: FDA-compliant oil-free bushings to avoid

1.Material composition Material: high-strength copper alloy (such as tin bronze), cast iron or steel backing. Lubricating layer: embedded graphite, PTFE (polytetrafluoroethylene), molybdenum disulfide and other solid lubricants. Composite bushings: Some products use metal + engineering plastic composite structure (such as POM, nylon). 2.Key performance parameters Parameter Typical value/characteristicFriction coefficient 0.05~0.15 (under dry friction conditions)Load capacity

Oil-free bushings (or self-lubricating bearings) are sliding bearings that can run for a long time without external lubricating oil. They use special materials and structural designs, and achieve low friction and wear resistance through built-in solid lubricants. Widely used in high-load, low-speed or maintenance-free industrial scenarios. Core advantages Maintenance-free: no need to add lubricating oil,

1. Structural Advantages A. Precision Enhancement B. Performance Benefits Feature Technical Advantage Measurable Impact High-Speed Capacity DN value up to 140,000+ Enables 5m/s+ linear speeds Low Friction Rolling contact (μ≈0.002-0.005) 90-95% mechanical efficiency Long Service Life L10 life exceeding 20,000 hours 50,000km+ travel distance C. Maintenance Advantages 2. Technical Limitations A. Cost Considerations B. Design

1. Fundamental Design Differences Parameter Trapezoidal Screw (ACME Thread) Ball Screw Working Principle Sliding friction (metal-to-metal) Rolling friction (ball recirculation) Contact Type Surface contact Point contact Backlash 0.1-0.5mm (requires anti-backlash nut) ≤0.05mm (eliminable with preload) Self-Locking Yes (when lead angle < friction angle) No (requires brake) 2. Performance Characteristics Load Capacity: Load Type Trapezoidal Advantage