Description
CAT 532-9430 68mm Outer Diameter Needle Bearing
| CAT 532-9430 68mm Outer Diameter Needle Bearing |
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The CAT 532-9430 is a Caterpillar genuine needle roller bearing with a cage and no inner ring. It is suitable for radially heavy-duty applications in compact spaces such as gearboxes and hydraulic pumps, and is characterized by high load capacity and low friction. The following are its key features.
Core Technical Parameters
Item Details
Part Model: CAT 532-9430 (Needle Roller Bearing without Inner Ring, with Cage and Needle Roller Assembly)
Material: Needle Rollers: GCr15 high-carbon chromium bearing steel (HRC 62-65), Cage: Low-carbon alloy steel, stamped, suitable for -40℃ to +120℃ operating conditions
Key Dimensions: Inner diameter 45 mm (1.772 in), Outer diameter 52 mm (2.047 in), Width 24 mm (0.945 in), Needle Roller Diameter 3 mm, Quantity 14, Chamfer 1.5 mm
Load Capacity: Basic rated radial load 38.5 kN, Basic rated static radial load 42.8 kN, Limiting speed 6000 rpm (grease lubrication) / 8500 rpm (oil lubrication)
Unit Weight: Approx. 0.11 kg (0.243 lbs)
Tolerances and Clearances: Inner diameter tolerance H7 (+0.030/0 mm), outer diameter tolerance g6 (0/-0.019 mm), radial clearance C3 (0.012-0.025 mm), suitable journal surface hardness ≥ HRC 58 Structure and Core Functions
Compact Design: No inner ring structure, directly mates with hardened journals, saving installation space, suitable for narrow parts such as gearbox input shafts and hydraulic pump drive shafts.
Heavy-Duty Adaptability: Large needle roller length-to-diameter ratio, wide contact area, strong radial load capacity, suitable for low-speed, heavy-load, and impact conditions, such as gearbox planetary carrier support.
Low Friction: Precise positioning of the needle rollers by the cage avoids contact friction, reduces operating resistance, improves transmission efficiency, suitable for continuously operating power components.
Flexible Installation: Can be interference-fitted with bearing housings, the journal directly serves as the inner raceway, simplifying the assembly process, suitable for batch maintenance scenarios.
Compatible Models and Application Scenarios
Compatible Equipment: CAT 305.5E2/306E2 mini excavators, 906M/907M loaders, C4.4/C6.6 engine hydraulic pumps, 4L-855 transmissions, etc.
Core Applications: Installed on the transmission countershaft support, hydraulic pump drive end, differential planetary gear shaft, steering gear rack shaft, etc., providing radial support and ensuring stable power transmission.
