Confirm the required diameter
Use the gearbox-shell specification and product listing to verify the exact bushing size.
Performance parts
Bushing
420F stainless steel bushings in 7mm, 8mm and 9mm sizes, including a 9mm dual-oil-groove design. Hardness: HRC38–42. Select the diameter required by your gearbox shell. Check the product dimensions and allow for correct seating, gear alignment and shimming during installation.
Bushing products
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Fit and installation guide
Choose the Right Airsoft Bushings
Confirm the required diameter, gearbox-shell fit, material, and installation plan before choosing bushings. Correct seating and alignment are essential to a reliable gear train.
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Check shell and bore fit
The bushing must fit the shell correctly without distortion, looseness, or incorrect installation force.
Plan gear alignment
Bushing seating, gear height, shimming, and free rotation should be checked as one system.
Frequently Asked Questions
Shop Airsoft Gear SetsHow do I choose the correct airsoft bushing size?
Identify the gearbox shell and measure or confirm its required bushing diameter. Use the exact product specification rather than estimating from the gearbox version alone.
What should be checked after installing bushings?
Check that each bushing is fully and evenly seated, then verify gear height, shimming, alignment, and free rotation before completing the gearbox build.