The body bushing is a cylindrical sleeve pressed into control arms, subframes, or shock mounts to isolate vibration and maintain suspension geometry. This specific unit measures 25mm inner diameter, 30mm outer diameter, and 30mm length, with a steel-backed bronze construction (SAE 660) rated at 40 HRC. It fits compact and mid-size vehicles (A/B/C classes) and light industrial machinery.
The 25mm ID x 30mm OD x 30mm body bushing is press-fit with an interference of 0.03–0.05mm, meaning it will not slide out by hand. Attempting to pry it with a screwdriver or chisel will distort the 30mm outer shell and scratch the housing bore, leading to misalignment and premature failure of the replacement. The correct method uses a two-jaw puller or a hydraulic press with a receiving cup that matches the 30mm OD. Apply force gradually—no more than 0.5 tons per second—until the bushing clears the bore. For vehicles, raise the chassis on stands and support the control arm with a jack to avoid load transfer. Penetrating oil (e.g., WD-40) applied 15 minutes before removal reduces friction by up to 30% on corroded units.
Typical applications include front lower control arms on compact cars (e.g., VW Golf, Ford Focus), rear subframe mounts on mid-size sedans, and shock absorber eyes on light trailers. The 30mm length is critical: shorter bushings (e.g., 20mm) tend to cock sideways during removal, while this 30mm version provides a longer guide surface for the puller. In industrial settings, this bushing is found in conveyor idler arms and small linkage pivots where radial loads do not exceed 2.5 kN. The bronze lining tolerates temperatures from -40°C to 120°C, so removal in cold workshops (down to -10°C) does not require preheating, though warming the housing to 60°C can reduce extraction force by 15%.
Compared to a 20mm ID x 25mm OD x 20mm bushing, this 25x30x30 unit has a 56% larger projected area (750 mm² vs 480 mm²), which lowers contact pressure under the same load. That means less fretting and longer intervals between replacements—typically 80,000–100,000 km on passenger cars versus 50,000–60,000 km for smaller bushings. The trade-off is a higher removal force: expect 1.2–1.8 tons for a corroded 25x30x30 bushing versus 0.8–1.2 tons for the 20mm version. Always use a puller rated for at least 3 tons to maintain a safety margin.
