PRODUCT
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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
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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
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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
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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
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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
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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
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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
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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
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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
- Sleeve Bearing
- Other Bearings
Rigidity and lubrication of crossed roller bearings
by:JNSN
2021-12-24
Rigidity Because there are more cylindrical rollers, the bearing has higher axial and radial load carrying capacity. The line contact between the roller and the raceway ensures that the bearing has a higher rigidity. After the installation and fit, the rigidity of the bearing will also increase due to the increase of the preload. The axial offset a of the crossed roller bearing can be obtained by the following formula under the action of the axial force Ka passing through the shaft center. Axial offset when Ka 2.114 · FV: Axial offset when K 2.114 · FV: a mm Axial offset between shaft washer and seat washer Ka kN Internal axial force FV kN Bearing preload Cs kN0.926 /mm Axial rigidity parameter. The calculation can only give the deflection of the bearing and must also consider the deflection of the surrounding structural parts. Sealed bearings are open. Some seals can be designed on the surrounding structural parts. Lubricated cross roller bearings can be lubricated with oil or grease. Grease lubrication For grease lubrication, high-quality lithium-based greases KP2N20 to DIN 51825 are suitable, such as Arcanol MULTITOP. For low speeds, especially horizontal shafts, simple grease lubrication is sufficient. For vertical shaft grease lubrication, a baffle must be installed under the bearing to prevent grease leakage. It is recommended to use lithium-based grease with EP additives. When adding grease for initial installation, add some grease in the gap between the rollers. The amount of regrease is 20% to 30% of the initial grease amount. Oil lubrication For oil lubrication, oil CLP conforming to DIN 51517 or HLP conforming to DIN 51524 Viscosity ISO VG 46 to ISO VG 68 are suitable. Circulating oil lubrication Generally speaking, the circulating oil of the cross roller can be shared with the drive system. If it is only used for bearing lubrication, only a small amount of lubricating oil is needed. For high speed, oil cooling is required, and a large amount of lubricating oil is required, as shown in Figure 5. For each working condition, the actual amount of oil required in the end is determined by the bearing temperature. V u003d Oil quantity Du003d Bearing outer diameter a u003d Sufficient oil quantity required for lubrication b u003d Oil quantity required for cooling and lubrication Lubrication and cooling Only used for lubricating the oil quantity shown in Figure 5. The reference viscosity of mineral oil is determined by the reference viscosity 1 in order to ensure adequate lubrication of NTN bearings. In this case, ensure that the lubricant's working viscosity (viscosity at working temperature) is at least equal to the reference viscosity 1. Ratio u003d / 1 u003d 2, Figure 6. The reference viscosity is determined by the average bearing diameter dM u003d (D + d)/2 and the speed. The working viscosity can be queried through the viscosity/temperature table, the reference temperature and the viscosity at +40 °C are required. Lubricants with an operating viscosity greater than 1 at operating temperature have a positive effect on bearing fatigue life. In addition, bearings with EP additives can ensure adequate lubrication at low speeds. EP additives are also required at lower levels. Operating temperature The suitable operating temperature range for crossed roller bearings is 30 °C to +80 °C. n u003d Working speed 1 u003d Reference viscosity dM u003d Bearing diameter (d +D)/2 u003d Working temperature Viscosity mm2s1 at +40 °C Figure 6 Reference viscosity and V/T of mineral oil.
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