PRODUCT
-
Deep Groove Ball Bearing
- Deep Groove Ball Bearing 6000 Series
- Full Complement Deep Groove Ball Bearing 6000-V Series
- Flanged Deep Groove Ball Bearing F6000 Series
- Deep Groove Ball Bearing 6200 Series
- Deep Groove Ball Bearing 6200NR Series
- Deep Groove Ball Bearing 6300 Series
- Deep Groove Ball Bearing 6300NR Series
- Deep Groove Ball Bearing 6400 Series
- Deep Groove Ball Bearing 6000NR Series
- Deep Groove Ball Bearing 6700 Series
- Flanged Deep Groove Ball Bearing F6700 Series
- Deep Groove Ball Bearing 6800 Series
- Full Complement Deep Groove Ball Bearing 6800-V Series
- Flanged Deep Groove Ball Bearing F6800 Series
- Deep Groove Ball Bearing 6900 Series
- Full Complement Deep Groove Ball Bearing 6900-V Series
- Flanged Deep Groove Ball Bearing F6900 Series
- Deep Groove Ball Bearing 62200 Series
- Deep Groove Ball Bearing 62300 Series
- Deep Groove Ball Bearing 63000 Series
- Deep Groove Ball Bearing 63800 Series
- Full Complement Deep Groove Ball Bearing 63800-V Series
- Deep Groove Ball Bearing 16000 Series
- Double Row Deep Groove Ball Bearing 4200 Series
- Double Row Deep Groove Ball Bearing 4300 Series
- Deep Groove Ball Bearing Inch R Series
- Deep Groove Ball Bearing Inch RMS Series
- Miniature Deep Groove Ball Bearing
-
Spherical Roller Bearings
- Spherical Roller Bearing 21300 Series
- Spherical Roller Bearing 22200 Series
- Spherical Roller Bearing 22300 Series
- Spherical Roller Bearing 23000 Series
- Spherical Roller Bearing 23100 Series
- Spherical Roller Bearing 23200 Series
- Spherical Roller Bearing 23900 Series
- Spherical Roller Bearing 24000 Serie
- Spherical Roller Bearing 24100 Series
- Split Style Spherical Roller Bearing
- Thrust Roller Bearing
-
Joint Bearing
- Radial Spherical Joint Plain Bearing GE...E
- Radial Spherical Joint Plain Bearing GE...ES
- Radial Spherical Joint Plain Bearing GE...ES-2RS
- Rod End Joint Bearing PHS/PHSB
- Rod End Joint Bearing GE...C
- Rod End Joint Bearing SI...TK
- Rod End Joint Bearing NHS
- Rod End Joint Bearing GIR...DO
- Rod End Joint Bearing GIR...C
- Rod End Joint Bearing GIR...UK
- Rod End Joint Bearing SQZ...RS
- Rod End Joint Bearing SA...T/K
- Rod End Joint Bearing POS/POSB
- Rod End Joint Bearing NOS
- Rod End Joint Bearing GAR...DO
- Rod End Joint Bearing GAR...C
- Rod End Joint Bearing GAR...UK
- Rod End Joint Bearing SQ...RS
- Rod End Joint Bearing SA...E
-
Angular Contact Ball Bearings
- Single Row Angular Contact Ball Bearing 7000 series
- Single Row Angular Contact Ball Bearing 7200 series
- Single Row Angular Contact Ball Bearing 7300 series
- Single Row Angular Contact Ball Bearing 7900 series
- Double Row Angular Contact Ball Bearing 3200 Series
- Double Row Angular Contact Ball Bearing 3300 Series
- Qj2 Series Four Point Angular Contact Ball Bearing
- Qj3 Series Four Point Angular Contact Ball Bearing
-
Tapered Roller Bearings
- Single Row Tapered Roller Bearing 30200 Series
- Single Row Tapered Roller Bearing 30300 Series
- Single Row Tapered Roller Bearing 31300 Series
- Single Row Tapered Roller Bearing 32000 Series
- Single Row Tapered Roller Bearing 32200 Series
- Single Row Tapered Roller Bearing 32300 Series
- Single Row Tapered Roller Bearing 33000 Series
- Single Row Tapered Roller Bearing 33100 Series
- Single Row Tapered Roller Bearing 33200 Series
- Single Row Tapered Roller Bearing Inch Series
- Double Row Tapered Roller Bearing 350000 Series
- Double Row Tapered Roller Bearing Inch Series
- Four-row Tapered Roller Bearing 380000 Series
- Four-row Tapered Roller Bearing Inch Series
-
Needle Roller Bearing
- HK Style Standard Needle Roller Bearing
- HF Style Standard Needle Roller Bearing
- F Style Standard Needle Roller Bearing
- K Style Standard Needle Roller Bearing
- SCE Style Standard Needle Roller Bearing
- CF Style Standard Needle Roller Bearing
- HFL Style Standard Needle Roller Bearing
- TA Style Standard Needle Roller Bearing
- NATR Style Standard Needle Roller Bearing
- BK Style Standard Needle Roller Bearing
- NA Style Standard Needle Roller Bearing
- NK Style Standard Needle Roller Bearing without Inner Ring
- NKI Style Standard Needle Roller Bearing with Inner Ring
- NKIS Style Standard Needle Roller Bearing with Inner Ring
- NKS Style Standard Needle Roller Bearing without Inner Ring
- RNA Standard Needle Roller Bearing without Inner Ring
- Inch-Style Needle Roller Bearing
- MR Series Heavy Duty Needle Roller Bearing
- Self-Aligning Ball Bearings
-
Cylindrical Roller Bearings
- Cylindrical Roller Bearing N Series
- Cylindrical Roller Bearing NU Series
- Cylindrical Roller Bearing NJ Series
- Cylindrical Roller Bearing NF Series
- Cylindrical Roller Bearing NUP Series
- Cylindrical Roller Bearing NFP Series
- Cylindrical Roller Bearing NH(NJ+HJ) Series
- Cylindrical Roller Bearing NN Series
- Cylindrical Roller Bearing NNU Series
- Cylindrical Roller Bearing NNF Series
- Cylindrical Roller Bearing FC Series
- Cylindrical Roller Bearing FCD Series
- SL Sheave Wheel Series Cylindrical Roller Bearing
- Thrust Ball Bearing
-
Pillow Block Bearing
- Pillow Block Bearing UC Inserts
- Pillow Block Bearing UK Inserts
- Pillow Block Bearing SB Inserts
- Pillow Block Bearing SA Inserts
- Pillow Block Bearing CS Inserts
- Pillow Block Bearing UCP
- Pillow Block Bearing UKP
- Pillow Block Bearing SAP
- Pillow Block Bearing SBP
- Pillow Block Bearing UCPA
- Pillow Block Bearing UKPA
- Pillow Block Bearing UCPH
- Pillow Block Bearing UKPH
- Pillow Block Bearing UCF
- Pillow Block Bearing UKF
- Pillow Block Bearing UCFL
- Pillow Block Bearing UKFL
- Pillow Block Bearing UCFC
- Pillow Block Bearing UKFC
- Pillow Block Bearing UCFA
- Pillow Block Bearing UKFA
- Pillow Block Bearing UCFB
- Pillow Block Bearing UKFB
- Pillow Block Bearing UCT
- Pillow Block Bearing UKT
- Pillow Block Bearing UCC
- Pillow Block Bearing SBPP
- Pillow Block Bearing SAPP
-
Linear Bearing
- Standard Linear Bearing LM Series
- Adjustable Type Linear Bearing LM-AJ Series
- Open Type Linear Bearing LM--OP Series
- Lengthened Type Linear Bearing LM-L Series
- Standard Linear Bearing LME Series
- Adjustable Type Linear Bearing LME-AJ Series
- Open Type Linear Bearing LME-OP Series
- Lengthened Type Linear Bearing LME--L Series
- Standard Linear Bearing LMB Series
- Adjustable Type Linear Bearing LMB--AJ Series
- Open Type Linear Bearing LMB--OP Series
- Lengthened Type Linear Bearing LMB--L Series
- Round Flange Linear Bearing LMF Series
- Square Flange Type Linear Bearing LMK Series
- Oval Flange Linear Bearing LMH Series
- Round Flange Linear Bearing LMF--L Series
- Square Flange Type Linear Bearing LMK-L Series
- Oval Flange Linear Bearing LMH-L Series
- Pilot Flange Linear Bearing LMFP Series
- Pilot Flange Linear Bearing LMKP Series
- Pilot Flange Linear Bearing LMHP Series
- Pilot Flange Linear Bearing LMFP-L Series
- Pilot Flange Linear Bearing LMKP-L Series
- Pilot Flange Linear Bearing LMHP-L Series
- Middle Flanged Linear Bearing LMFC-L Series
- Middle Flanged Linear Bearing LMKC-L Series
- Middle Flanged Linear Bearing LMHC-L Series
- Round Flange Linear Bearing LMEF Series
- Square Flange Type Linear Bearing LMEK Series
- Round Flange Linear Bearing LMEF-L Series
- Square Flange Type Linear Bearing LMEK-L Series
- Middle Flanged Linear Bearing LMEKC-L Series
- Middle Flanged Linear Bearing LMEFC-L Series
- Round Flange Linear Bearing LMBF Series
- Square Flange Type Linear Bearing LMBK Series
- Round Flange Linear Bearing LMBF-L Series
- Compact Ball Bushing KH Series
- SC UU Slide Block Unit Series
- SC LUU Linear Case Unit Series
- SC VUU Linear Pillow Block Unit Series
- SBR UU Support Rail Unit Series
- SBR LUU Support Rail Unit Series
- TBR UU Support Rail Unit Series
- SCE UU Slide Block Unit Series
- SCE LUU Linear Case Unit Series
- SCE VUU Linear Pillow Block Unit Series
- Vertical Shaft Support SK Series
- Horizontal Shaft Support SHF Series
- Other Bearings
Friction torque and heating of the outer spherical bearing
by:JNSN
2021-12-23
The friction torque of ball bearings for seated rolling bearings is a combination of rolling friction of rolling elements (balls) and raceway rings (outer ring, inner ring), sliding friction of rolling elements and cages, stirring resistance of lubricants, and friction of oil seals. Resistance. The friction torque is affected by the bearing type and size, bearing load, speed and lubrication conditions. In order to improve the sealing performance of the bearing, the seated rolling bearing especially adopts an oil seal with good dustproof performance, so the friction resistance of the oil seal occupies a large proportion of the friction torque of the bearing. The friction torque of the ball bearing for rolling bearing with seat can be calculated by the following formula. In the above formula, M: friction torque of the bearing, mN·m Mp: friction torque according to load changes, mN·m Mk: friction torque according to speed changes, mN·m μ: friction coefficient (0.001 5~0.002) P : Bearing load, N d: Nominal inner diameter of bearing, mm. However, it is difficult to calculate the values u200bu200bof the stirring resistance of the lubricant and the frictional resistance of the oil seal that change according to the rotation speed. The measurement results of the friction torque of a representative rolling bearing with seat are shown in Figure 13.1. An example of the measurement result of the friction torque of a seated rolling bearing. Bearing temperature rise: The temperature rise of ball bearings for rolling bearings with seat is caused by the conversion of the friction torque inside the bearing into heat energy during operation. The bearing temperature during operation increases in proportion to the increase in the friction torque and the increase in the speed (the friction torque increases in proportion to the increase in the bearing load). The temperature rise of a ball bearing for rolling bearings with a seat is determined by the heat generated by the internal friction of the bearing and the heat released from the surface of the bearing and the bearing housing to the outside. Therefore, the temperature rise of the ball bearing for rolling bearing with a seat is affected by the condition of the surrounding (the quality of the heat radiation environment) where the bearing with the seat is installed. The temperature of the seated rolling bearing rises slowly after the start of the operation, and if there is no abnormality, it reaches the highest after 1 to 2 hours, and then the temperature drops slightly and becomes a stable state (refer to Figure 13.2). The temperature of the bearing is almost a constant value if the operating conditions do not change, so the condition of the bearing can be estimated by measuring the temperature. Example of temperature measurement results of UCP208J with vertical seat bearing during operation. The temperature rise and friction torque of a seated rolling bearing during operation are the same, and it is different due to the different types of oil seals used in the bearing. The temperature rise of the triple seal product (accessory symbol L3) is larger than that of the ordinary product, and the temperature rise of the non-contact seal product (special symbol K3, S5) is smaller than that of the ordinary product. High-speed components and blower components operate at high speeds, and at the same time, non-contact oil seals are used to suppress heat generation, vibration, and noise during operation.
Custom message