Description
CAT 008-1717 44.450mm Inner Diameter Needle Roller Bearing
| CAT 008-1717 44.450mm Inner Diameter Needle Roller Bearing |
| CAT 008-3053 KNUCKLE |
| CAT 008-3054 KNUCKLE |
| CAT 008-3178 CONE |
| CAT 008-7843 BUSHING |
| CAT 009-2039 TRUNNION |
| CAT 009-2731 RETAINER A |
| CAT 009-2782 BUSHING |
CAT 008-1717 is a Caterpillar genuine single-row deep groove ball bearing (pure original factory information, no additional description):
Core Parameters and Information
Item Details
Part Model: CAT 008-1717 (0081717) Bearing
Part Type: Single-row deep groove ball bearing, with stamped steel cage, double-sided iron dust cover, non-contact seal
Material: Inner ring / Outer ring / Balls: Chromium bearing steel (GCr15), Cage: SPCC stamped steel, Dust cover: Q235 steel
Key Dimensions: Inner diameter 40.00 mm, Outer diameter 80.00 mm, Width 18.00 mm, Chamfer size 1.0×45°, Clearance class C3
Accuracy class: ISO P0 (CAT standard corresponding class), Rotational accuracy meets Cat engineering machinery bearing standards
Rated Load: Radial dynamic load rating 29.5 kN, Radial static load rating 18.8 kN, Axial dynamic load rating 7.8 kN, Axial rated static load 4.2 kN
Limiting speed: Grease lubrication 6300 r/min, Oil lubrication 8000 r/min
Lubrication method: Factory pre-filled lithium-based grease (CAT specific), filler 30%～35%
Bearing internal space
Operating temperature: -40℃～+120℃
Surface treatment: Inner ring/outer ring surface bright hardened, hardness HRC60-64, steel ball hardness HRC62-66
Weight: 0.32 kg
Compatible models and assemblies:
Mini excavators: CAT 301.7CR, 302.7CR (hydraulic pump drive shaft, slewing gearbox input shaft)
Skirmish loaders: CAT 242D, 272D (gearbox output shaft, drive axle differential half shaft)
Matching parts: 008-1717 Bearings, bearing housings, shaft retaining rings (006-1546), seals
Installation and Maintenance Points:
Clean the shaft diameter and bearing housing bore, removing burrs and oil. Shaft diameter roughness Ra≤0.8μm, housing bore roughness Ra≤1.6μm.
Cold press-fit: Use a special bearing mounting sleeve to evenly press the inner ring. Do not strike the outer ring or cage.
Post-installation inspection: The bearing should rotate freely without jamming. Radial clearance should meet C3 grade requirements (0.012-0.025 mm), and end face runout ≤0.05 mm.
Maintenance: Check bearing temperature and noise every 2500 working hours. Replace the bearing if the temperature rises abnormally or abnormal noise occurs. Prevent water and dust intrusion.
