Overview
The SKF 29850 is a radial shaft oil seal engineered by Chicago Rawhide (now part of SKF) for robust sealing in moderately demanding grease-lubricated environments. This single-lip grease seal combines proven HM14 design with metal casing and nitrile rubber (NBR) lip material to prevent lubricant leakage and contaminant ingress in rotating equipment. The 3-inch shaft diameter with straight-lip design makes it suitable for gearboxes, bearings, and industrial rotating equipment operating at moderate speeds.
Key Features
- Single-Lip Grease Seal: Optimized for grease retention and moderate-speed applications
- Straight Lip Design: Face lip outward configuration for maximum exclusion of contaminants
- HM14 Design Standard: Proven industry geometry for reliable sealing performance
- Metal Case Construction: Steel casing ensures durability and proper housing press fit installation
- Nitrile Rubber (NBR) Lip Material: Resistant to wide operating temperature ranges and petroleum-based lubricants
Technical Specifications
- Shaft Diameter (ID): 3.000 inches
- Outside Diameter (OD): 3.623 inches
- Width: 0.250 inches
- Design Type: HM14
- Lip Type: Straight lip, single
- Case Material: Steel
- Lip Material: Nitrile Rubber (NBR)
- Configuration: Solid seal, face lip outwards
- Installation Method: Housing press fit
- Operating Temperature Range: –40 to 210 °F
- Pressure Tolerance: 3 psi maximum
- Lubrication Type: Grease (moderate-speed applications)
Typical Applications
The SKF 29850 is widely used in:
- Gearbox housings and bearing enclosures
- Industrial pump and motor bearing seals
- Automotive transmission and transfer case applications
- Agricultural equipment and machinery bearings
- Material handling and conveyor drive systems
- Manufacturing equipment with grease-lubricated shafts at moderate speeds
Compatibility & Replacements
Compatible With
- Gearbox housings accepting 3-inch shaft diameter seals
- Industrial bearing enclosures with metric or inch dimensions
- Equipment requiring grease retention at moderate circumferential speeds
- Systems requiring –40 to 210 °F operating temperature range
- Chicago Rawhide (CR) seal cross-reference systems and equipment specifications
Replaces / Drop-In Replacement For
As a Chicago Rawhide CR 29850 seal, this unit is a direct replacement for identical part numbers specified in equipment manuals and OEM documentation. Verify compatibility with your system integrator or equipment manufacturer before ordering, as similar dimensions may exist across different seal families.
Works With
- Compatible wear sleeves: 99048, 99296, 99300, 99848
- Compatible V-Rings: 400750, 400751, 400754, 400755 (for enhanced protection when specified)
- Petroleum-based grease lubricants (NLGI Grade 1–3)
- Standard bearing housings and gearbox installation procedures
