Related Resources: bearing
Typical Bearing Life in Hours
Bearing Specification and Design Guide
Typical Bearing Life in hours for Various Design Applications
Related:
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- Bearing Life Formula Based on Speed, Load and Hardness
- Thrust Bearings Life Ratings
- Bearing Materials, Ceramic, Chrome Steels, Stainless Steels, and Plastics
- Critical Speeds of Rotating Shafts Equation and Calculators
Application
|
Design life
hours |
Agricultural equipment
|
3000 – 6000
|
Aircraft equipment
|
500 – 2000
|
Automotive
|
|
Race car
|
500 – 800
|
Light motor cycle
|
600 – 1200
|
Heavy motor cycle
|
1000 – 2000
|
Light cars
|
1000 – 2000
|
Heavy cars
|
1500 – 2500
|
Light trucks
|
1500 – 2500
|
Heavy trucks
|
2000 – 2500
|
Buses
|
2000 – 5000
|
Electrical
|
|
Household appliances
|
1000 – 2000
|
Motors ≤ 1⁄2 hp
|
1000 – 2000
|
Motors ≤ 3 hp
|
8000 – 10000
|
Motors, medium
|
10000 – 15000
|
Motors, large
|
20000 – 30000
|
Elevator cables sheaves
|
40000 – 60000
|
Mine ventilation fans
|
40000 – 50000
|
Propeller thrust bearings
|
15000 – 25000
|
Propeller shaft bearings
|
> 80000
|
Gear drives
|
|
Boat gearing units
|
3000 – 5000
|
Gear drives
|
> 50000
|
Ship gear drives
|
20000 – 30000
|
Machinery for 8 hour service
which are not always fully utilized |
14000 – 20000
|
Machinery for 8 hour
service which are fully utilized |
20000 – 30000
|
Machinery for continuous 24 hour service
|
50000 – 60000
|
Application | Design life hours |
Gearing units | |
Automotive | 600 – 5000 |
Multipurpose | 8000 – 15000 |
Machine tools | 20000 |
Rail Vehicles | 15000 – 25000 |
Heavy rolling mill | > 50000 |
Machines | |
Beater mills | 20000 – 30000 |
Briquette presses | 20000 – 30000 |
Grinding spindles | 1000 – 2000 |
Machine tools | 10000 – 30000 |
Mining machinery | 4000 – 15000 |
Paper machines | 50000 – 80000 |
Rolling mills | |
Small cold mills | 5000 – 6000 |
Large multipurpose mills | 8000 – 10000 |
Rail vehicle axle | |
Mining cars | 5000 |
Motor rail cars | 16000 – 20000 |
Open–pit mining cars | 20000 – 25000 |
Streetcars | 20000 – 25000 |
Passenger cars | 26000 |
Freight cars | 35000 |
Locomotive outer bearings | 20000 – 25000 |
Locomotive inner bearings | 30000 – 40000 |
Machinery for short or intermittent operation where service interruption is of minor importance |
4000 – 8000 |
Machinery for intermittent service where reliable operation is of great importance |
8000 – 14000 |
Instruments and apparatus in frequent use | 0 – 500 |