The main functions of Atlas Copco
Precise positioning: During the assembly of components such as bearings, gears, and pistons in the air compressor, the spacer ring ensures that adjacent parts maintain the designed axial clearance as per the design requirements, preventing wobbling due to excessive clearance or frictional jamming due to insufficient clearance.
Load dispersion: At the force-bearing components such as bearings and shaft sleeves, the spacer ring can assist in distributing the axial force, reducing the load pressure on individual parts and extending the service life of the components.
Sealing assistance: Some spacer rings are used in conjunction with sealing rings to control the compression of the sealing elements, ensuring the sealing effect and preventing lubricating oil leakage or compressed gas leakage.
Simplified assembly: Standardized spacer rings can replace complex stepped shaft designs, reducing processing difficulty and facilitating disassembly and maintenance.
Common application locations
Main shaft components: In the rotating shaft systems of screw-type air compressors, such as the male and female rotor shafts and motor shafts, spacer rings are often installed between the bearings and gears (or couplings) to control the bearing clearance and gear meshing clearance.
Piston connecting rod mechanism: In piston-type air compressors, spacer rings may be used at the connection points of connecting rods and crankshafts to ensure the precise reciprocating motion of the piston in the cylinder and avoid collisions with the cylinder head.
Between the cylinder body and end cover: For some air compressors, the spacer ring is used to control the distance between the cylinder body and the end cover to ensure the reasonable compression amount of the internal sealing elements.
Oil separator core: In the oil collection bucket, the spacer ring can be used to fix the position of the oil separator core to ensure its coaxiality with the bucket body and improve the separation efficiency.
Material and selection
Material: Depending on the force size, working temperature, and wear resistance requirements, common materials include:
Ordinary carbon steel (for low-load, normal-temperature scenarios);
Stainless steel (corrosion-resistant, suitable for humid or oil-containing environments);
Copper or aluminum alloy (soft texture, can reduce wear on mating parts, suitable for precise assembly). Key parameters:
Inner diameter (matching the outer diameter of the shaft or installation position);
Outer diameter (fitting with the inner diameter of the housing or mating part);
Thickness (determining the spacing distance, must strictly comply with the design drawings requirements, the tolerance is usually controlled within ±0.01 to ±0.05mm);
Surface roughness (needs to be smooth without burrs, to avoid scratching the mating part during assembly).
