MPNbase

45 mm bore bearings

355 models with a 45 mm (1.772 in) bore across 16 bearing types, outside diameters from 50 to 120 mm. Tables are grouped by type; open a model for full specs and equivalents.

355 models 50–120 mm OD range 5 brands

Adapter Sleeves (3)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
H-209 H2 45 65 33 SKF — — —
H-309 H3 45 65 39 SKF — — —
H-309-E H3 45 65 39 SKF — — —

Angular Contact Ball Bearings (44)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
71809 71800 45 58 7 GENERIC-ISO open CN —
71909 71900 45 68 12 GENERIC-ISO open CN —
7909 7900 45 68 12 NTN open CN 17.4
7009 7000 45 75 16 GENERIC-ISO open CN —
7009-NTN 7000 45 75 16 NTN open CN 24.7
7209 7200 45 85 19 SKF open CN 38
7209-ACCBM 7200 45 85 19 SKF open CN 44
7209-BE-2RZP 7200 45 85 19 SKF RSR CN 35.8
7209-BECBM 7200 45 85 19 SKF open CN 38
7209-BECBP 7200 45 85 19 SKF open CN 38
7209-BECBY 7200 45 85 19 SKF open CN 40
7209-BEGAPH 7200 45 85 19 SKF open CN 38
7209-NTN 7200 45 85 19 NTN open CN 44
7209B 7200 45 85 19 NTN open CN 40
QJ-209-MA QJ200 45 85 19 SKF open CN 63
QJ209 QJ200 45 85 19 NTN open CN 55
3209-A 3200 45 85 30.2 SKF open CN 51
3209-A-2RS1 3200 45 85 30.2 SKF 2RS CN 51
3209-A-2Z 3200 45 85 30.2 SKF ZZ CN 51
3209-ATN9 3200 45 85 30.2 SKF open CN 51
5209S 5200S 45 85 30.2 NTN open CN 49.5
7309 7300 45 100 25 SKF open CN 55.9
7309-ACCBM 7300 45 100 25 SKF open CN 68
7309-BE-2RZP 7300 45 100 25 SKF RSR CN 55.9
7309-BECBM 7300 45 100 25 SKF open CN 61
7309-BECBP 7300 45 100 25 SKF open CN 61
7309-BECBY 7300 45 100 25 SKF open CN 64
7309-BEGAPH 7300 45 100 25 SKF open CN 61
7309-BEP 7300 45 100 25 SKF open CN 55.9
7309-NTN 7300 45 100 25 NTN open CN 70.5
7309B 7300 45 100 25 NTN open CN 64.5
QJ-309-MA QJ300 45 100 25 SKF open CN 100
QJ-309-N2MA QJ300 45 100 25 SKF open CN 100
QJ-309-N2PHAS QJ300 45 100 25 SKF open CN 100
QJ-309-PHAS QJ300 45 100 25 SKF open CN 100
QJ309 QJ300 45 100 25 NTN open CN 87
3309-A 3300 45 100 39.7 SKF open CN 75
3309-A-2RS1 3300 45 100 39.7 SKF 2RS CN 75
3309-A-2Z 3300 45 100 39.7 SKF ZZ CN 75
3309-ATN9 3300 45 100 39.7 SKF open CN 75
3309-DMA 3300 45 100 39.7 SKF open CN 79.3
3309-DNRCBM 3300 45 100 39.7 SKF open CN 61.8
5309S 5300S 45 100 39.7 NTN open CN 68.5
7409 7400 45 120 29 GENERIC-ISO open CN —

CARB Toroidal Roller Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
C6909-V C6900 45 68 40 SKF open CN 132
C2209-KTN9 C2200 45 85 23 SKF open CN 93
C2209-TN9 C2200 45 85 23 SKF open CN 93
C2209-V C2200 45 85 23 SKF open CN 106
C2210-KTN9-AHX310 carb-withdrawal-sleeve 45 90 23 SKF open CN 98
C2210-KTN9-H310-E carb-adapter-sleeve 45 90 23 SKF open CN 98

Cylindrical Roller Bearings (76)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
N1009 N1000 45 75 16 NTN open CN 34.5
NJ1009 NJ1000 45 75 16 NTN open CN 34.5
NJ1009-ECP NJ1000 45 75 16 SKF open CN 44.6
NU1009 NU1000 45 75 16 NTN open CN 34.5
NU1009-ECP NU1000 45 75 16 SKF open CN 44.6
NUP1009 NUP1000 45 75 16 NTN open CN 34.5
NCF3009-CV NCF3000 45 75 23 SKF open CN 60.5
NN3009 NN3000 45 75 23 NTN open CN 57.5
NN3009K NN3000 45 75 23 NTN open CN 57.5
SL183009-XL sl1830 45 75 23 FAG open CN 70
NNCF5009-CV NNCF5000 45 75 40 SKF open CN 112
NNF5009-ADB-2LSV NNF5000 45 75 40 SKF 2RS CN 102
SL185009-XL sl1850 45 75 40 FAG open CN 120
N209 N200 45 85 19 NTN open CN 51
N209-ECP N200 45 85 19 SKF open CN 69.5
N209EA N200 45 85 19 NTN open CN 74.5
NF209 NF200 45 85 19 NTN open CN 51
NF209EA NF200 45 85 19 NTN open CN 74.5
NJ209 NJ200 45 85 19 NTN open CN 51
NJ209-ECP NJ200 45 85 19 SKF open CN 69.5
NJ209EA NJ200 45 85 19 NTN open CN 74.5
NU209 NU200 45 85 19 SKF open CN 69.5
NU209-NTN NU200 45 85 19 NTN open CN 51
NU209EA NU200 45 85 19 NTN open CN 74.5
NUP209 NUP200 45 85 19 NTN open CN 51
NUP209-ECP NUP200 45 85 19 SKF open CN 69.5
NUP209EA NUP200 45 85 19 NTN open CN 74.5
N2209 N2200 45 85 23 NTN open CN 68
N2209EA N2200 45 85 23 NTN open CN 90
NF2209EA NF2200 45 85 23 NTN open CN 90
NJ2209 NJ2200 45 85 23 NTN open CN 68
NJ2209-ECP NJ2200 45 85 23 SKF open CN 85
NJ2209EA NJ2200 45 85 23 NTN open CN 90
NU2209 NU2200 45 85 23 SKF open CN 85
NU2209-NTN NU2200 45 85 23 NTN open CN 68
NU2209EA NU2200 45 85 23 NTN open CN 90
NUP2209 NUP2200 45 85 23 NTN open CN 68
NUP2209-ECP NUP2200 45 85 23 SKF open CN 85
NUP2209EA NUP2200 45 85 23 NTN open CN 90
SL182209-XL sl1822 45 85 23 FAG open CN 101
N309 N300 45 100 25 NTN open CN 82
N309-ECP N300 45 100 25 SKF open CN 112
N309EA N300 45 100 25 NTN open CN 115
NF309 NF300 45 100 25 NTN open CN 82
NF309EA NF300 45 100 25 NTN open CN 115
NJ309 NJ300 45 100 25 NTN open CN 82
NJ309-ECP NJ300 45 100 25 SKF open CN 112
NJ309EA NJ300 45 100 25 NTN open CN 115
NJG309-VH NJG300 45 100 25 SKF open CN 110
NU309 NU300 45 100 25 SKF open CN 112
NU309-NTN NU300 45 100 25 NTN open CN 82
NU309EA NU300 45 100 25 NTN open CN 115
NUP309 NUP300 45 100 25 NTN open CN 82
NUP309-ECP NUP300 45 100 25 SKF open CN 112
NUP309EA NUP300 45 100 25 NTN open CN 115
N2309 N2300 45 100 36 NTN open CN 110
N2309EA N2300 45 100 36 NTN open CN 162
NF2309EA NF2300 45 100 36 NTN open CN 162
NJ2309 NJ2300 45 100 36 NTN open CN 110
NJ2309-ECP NJ2300 45 100 36 SKF open CN 160
NJ2309EA NJ2300 45 100 36 NTN open CN 162
NJG2309-VH NJG2300 45 100 36 SKF open CN 172
NU2309 NU2300 45 100 36 SKF open CN 160
NU2309-NTN NU2300 45 100 36 NTN open CN 110
NU2309EA NU2300 45 100 36 NTN open CN 162
NUP2309 NUP2300 45 100 36 NTN open CN 110
NUP2309-ECP NUP2300 45 100 36 SKF open CN 160
NUP2309EA NUP2300 45 100 36 NTN open CN 162
SL192309-XL sl1923 45 100 36 FAG open CN 181
N409 N400 45 120 29 NTN open CN 119
NF409 NF400 45 120 29 NTN open CN 119
NJ409 NJ400 45 120 29 SKF open CN 106
NJ409-NTN NJ400 45 120 29 NTN open CN 119
NU409 NU400 45 120 29 SKF open CN 106
NU409-NTN NU400 45 120 29 NTN open CN 119
NUP409 NUP400 45 120 29 NTN open CN 119

Cylindrical Roller Thrust Bearings (2)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
81109-TN 81100 45 65 14 SKF open CN 45
81209-TN 81200 45 73 20 SKF open CN 83

Deep Groove Ball Bearings (75)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61809 61800 45 58 7 SKF open CN 6.63
61809-2RS 61800 45 58 7 SKF 2RS CN 6.63
61809-2RS-NSK 61800 45 58 7 NSK 2RS CN 7.25
61809-2RS-NTN 61800 45 58 7 NTN 2RS CN 5.95
61809-NSK 61800 45 58 7 NSK open CN 7.25
61809-NTN 61800 45 58 7 NTN open CN 5.95
61809-RSR 61800 45 58 7 SKF RSR CN 6.63
61809-RSR-NSK 61800 45 58 7 NSK RSR CN 7.25
61809-RSR-NTN 61800 45 58 7 NTN RSR CN 5.95
61809-ZZ 61800 45 58 7 NSK ZZ CN 7.25
61809-ZZ-NTN 61800 45 58 7 NTN ZZ CN 5.95
61909 61900 45 68 12 SKF open CN 14
61909-2RS 61900 45 68 12 SKF 2RS CN 14
61909-2RS-NSK 61900 45 68 12 NSK 2RS CN 15.5
61909-2RS-NTN 61900 45 68 12 NTN 2RS CN 14.5
61909-NSK 61900 45 68 12 NSK open CN 15.5
61909-NTN 61900 45 68 12 NTN open CN 14.5
61909-RSR 61900 45 68 12 SKF RSR CN 14
61909-RSR-NSK 61900 45 68 12 NSK RSR CN 15.5
61909-RSR-NTN 61900 45 68 12 NTN RSR CN 14.5
61909-ZZ 61900 45 68 12 NSK ZZ CN 15.5
61909-ZZ-NTN 61900 45 68 12 NTN ZZ CN 14.5
W61909-2RS 61900 45 68 12 SKF 2RS CN 12.1
16009 16000 45 75 10 NTN open CN 14.3
6009 6000 45 75 16 SKF open CN 22.1
6009-2RS 6000 45 75 16 SKF 2RS CN 22.1
6009-2RS-NSK 6000 45 75 16 NSK 2RS CN 23
6009-2RS-NTN 6000 45 75 16 NTN 2RS CN 23.2
6009-NSK 6000 45 75 16 NSK open CN 23
6009-NTN 6000 45 75 16 NTN open CN 23.2
6009-RSR 6000 45 75 16 NSK RSR CN 23
6009-RSR-NTN 6000 45 75 16 NTN RSR CN 23.2
6009-ZZ 6000 45 75 16 SKF ZZ CN 22.1
6009-ZZ-NSK 6000 45 75 16 NSK ZZ CN 23
6009-ZZ-NTN 6000 45 75 16 NTN ZZ CN 23.2
W6009-2RS 6000 45 75 16 SKF 2RS CN 18.2
W6009-ZZ 6000 45 75 16 SKF ZZ CN 18.2
63009-2RS 63000 45 75 23 SKF 2RS CN 20.8
209 200 45 85 19 SKF open CN 35.2
209-ZZ 200 45 85 19 SKF ZZ CN 35.2
6209 6200 45 85 19 SKF open CN 35.1
6209-2RS 6200 45 85 19 SKF 2RS CN 35.1
6209-2RS-NSK 6200 45 85 19 NSK 2RS CN 34.5
6209-2RS-NTN 6200 45 85 19 NTN 2RS CN 36
6209-NSK 6200 45 85 19 NSK open CN 34.5
6209-NTN 6200 45 85 19 NTN open CN 36
6209-RSR 6200 45 85 19 NSK RSR CN 34.5
6209-RSR-NTN 6200 45 85 19 NTN RSR CN 36
6209-ZZ 6200 45 85 19 SKF ZZ CN 35.1
6209-ZZ-NSK 6200 45 85 19 NSK ZZ CN 34.5
6209-ZZ-NTN 6200 45 85 19 NTN ZZ CN 36
W6209-2RS 6200 45 85 19 SKF 2RS CN 28.1
W6209-ZZ 6200 45 85 19 SKF ZZ CN 28.1
4209-ATN9 4200 45 85 23 SKF open CN 39
62209-2RS 62200 45 85 23 SKF 2RS CN 33.2
309 300 45 100 25 SKF open CN 55
309-ZZ 300 45 100 25 SKF ZZ CN 55
6309 6300 45 100 25 SKF open CN 55.3
6309-2RS 6300 45 100 25 SKF 2RS CN 55.3
6309-2RS-NSK 6300 45 100 25 NSK 2RS CN 58.5
6309-2RS-NTN 6300 45 100 25 NTN 2RS CN 58.5
6309-M 6300 45 100 25 SKF open CN 55.3
6309-NSK 6300 45 100 25 NSK open CN 58.5
6309-NTN 6300 45 100 25 NTN open CN 58.5
6309-RSR 6300 45 100 25 NSK RSR CN 58.5
6309-RSR-NTN 6300 45 100 25 NTN RSR CN 58.5
6309-ZZ 6300 45 100 25 SKF ZZ CN 55.3
6309-ZZ-NSK 6300 45 100 25 NSK ZZ CN 58.5
6309-ZZ-NTN 6300 45 100 25 NTN ZZ CN 58.5
4309-ATN9 4300 45 100 36 SKF open CN 68.9
62309-2RS 62300 45 100 36 SKF 2RS CN 52.7
6409 6400 45 120 29 SKF open CN 76.1
6409-2RS 6400 45 120 29 GENERIC-ISO 2RS CN 76.1
6409-NTN 6400 45 120 29 NTN open CN 85.5
6409-ZZ 6400 45 120 29 NTN ZZ CN 85.5

Insert Bearings (Y-bearings) (14)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
1726209-2RS1 17262 45 85 19 SKF 2RS CN 33.2
1726209-B-2RS1-VP274 17262 45 85 19 SKF 2RS CN 33.2
YET-209 YEL2 45 85 30.2 SKF open CN 33.2
YAT-209 YAR2 45 85 37 SKF open CN 33.2
YEL-209-2F YEL2 45 85 42.8 SKF 2RS CN 33.2
YELAG-209 YEL2 45 85 42.8 SKF 2RS CN 33.2
YSP-209-SB-2F YSP2 45 85 44.2 SKF 2RS CN 33.2
YSPAG-209 YSP2 45 85 44.2 SKF 2RS CN 33.2
YAR-209-2F YAR2 45 85 49.2 SKF 2RS CN 33.2
YAR-209-2RF YAR2 45 85 49.2 SKF 2RS CN 33.2
YARAG-209 YAR2 45 85 49.2 SKF 2RS CN 33.2
YSA-210-2FK-H-2310 YSA2 45 90 37 SKF 2RS CN 35.1
1726309-2RS1 17263 45 100 25 SKF 2RS CN 52.7
1726309-B-2RS1-VP274 17263 45 100 25 SKF 2RS CN 52.7

Needle Roller Bearings (33)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
K45X50X17 K 45 50 17 SKF open CN 21.6
K45X50X27 K 45 50 27 SKF open CN 33
HK4512 HK 45 52 12 SKF open CN 14.2
HK4516 HK 45 52 16 NTN open — 21.6
HK4520 HK 45 52 20 NTN open — 27.6
HK4520-2RS HK 45 52 20 SKF 2RS CN 20.5
K45X53X28 K 45 53 28 SKF open CN 49.5
RNAO45X55X17-XL rnao 45 55 17 FAG open CN 25.5
NK45-20-TN NK 45 55 20 SKF open CN 31.4
NK45-20-TV-XL nk 45 55 20 FAG open CN 35
NK45-30-TN NK 45 55 30 SKF open CN 45.7
NK45-30-TV-XL nk 45 55 30 FAG open CN 52
NKX45 NKX 45 58 32 SKF open CN 27.5
NKX45-Z NKX 45 58 32 SKF open CN 27.5
NKXR45 NKXR 45 58 32 SKF open CN 27.5
NKXR45-Z NKXR 45 58 32 SKF open CN 27.5
NKS45 NKS 45 60 22 SKF open CN 40.2
NKS45-XL nks 45 60 22 FAG open CN 45.5
RPNA45-62 RPNA 45 62 20 SKF open CN 27.5
NKI45-25-TN NKI 45 62 25 SKF open CN 42.9
NKI45-25-TV-XL nki 45 62 25 FAG open CN 48.5
NKI45-35-TN NKI 45 62 35 SKF open CN 58.3
NKI45-35-TV-XL nki 45 62 35 FAG open CN 67
RNAO45X62X40-ZW-ASR1-XL rnao 45 62 40 FAG open CN 76
NA4909 NA-49 45 68 22 SKF open CN 45.7
NA4909-XL na49 45 68 22 FAG open CN 51
NA4909-2RS NA-49 45 68 23 SKF 2RS CN 39.1
NKIA5909 NKIA 45 68 30 SKF open CN 45.7
NKIB5909 NKIB 45 68 34 SKF open CN 45.7
NA6909 NA-69 45 68 40 SKF open CN 70.4
NA6909-ZW-XL na69 45 68 40 FAG open CN 79
NKIS45 NKIS 45 72 22 SKF open CN 44.6
NKIS45-XL nkis 45 72 22 FAG open CN 51

Needle Roller Thrust Bearings (2)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
AXK4565 AXK 45 65 3 SKF open CN 27
AXW45 AXW 45 68 4.2 SKF open CN 27

Pillow Block Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
UCFL209 UCFL 45 85 49.2 NTN 2RS — 36
UCP209 UCP 45 85 49.2 NTN 2RS — 36
UCFLX09 UCFL 45 100 51.6 NTN 2RS — 39
UCPX09 UCP 45 100 51.6 NTN 2RS — 39
UCFL309 UCFL 45 100 57 NTN 2RS — 58.5
UCP309 UCP 45 100 57 NTN 2RS — 58.5

Self-Aligning Ball Bearings (21)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
11209-TN9 11200 45 85 19 SKF open CN 22.9
1209 1200 45 85 19 NTN open — 22
1209-EKTN9 1200 45 85 19 SKF open CN 22.9
1209-ETN9 1200 45 85 19 SKF open CN 22.9
1209K 1200 45 85 19 NTN open — 22
2209 2200 45 85 23 NTN open — 23.3
2209-E-2RS1KTN9 2200 45 85 23 SKF 2RS CN 22.9
2209-E-2RS1TN9 2200 45 85 23 SKF 2RS CN 22.9
2209-EKTN9 2200 45 85 23 SKF open CN 32.5
2209-ETN9 2200 45 85 23 SKF open CN 32.5
2209K 2200 45 85 23 NTN open — 23.3
1309 1300 45 100 25 NTN open — 38.5
1309-EKTN9 1300 45 100 25 SKF open CN 39
1309-ETN9 1300 45 100 25 SKF open CN 39
1309K 1300 45 100 25 NTN open — 38.5
2309 2300 45 100 36 NTN open — 55
2309-E-2RS1KTN9 2300 45 100 36 SKF 2RS CN 39
2309-E-2RS1TN9 2300 45 100 36 SKF 2RS CN 39
2309-EKTN9 2300 45 100 36 SKF open CN 63.7
2309-ETN9 2300 45 100 36 SKF open CN 63.7
2309K 2300 45 100 36 NTN open — 55

Sensor Bearing Units (2)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
BMB-6209-080S2-UB008A BMB 45 85 19 SKF — — 33.2
BMB-6209-080S2-UB108A BMB 45 85 19 SKF — — 33.2

Spherical Roller Bearings (14)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
22209 22200 45 85 23 SKF open CN 104
22209-EK 22200 45 85 23 SKF open CN 104
22209EAD1 22200 45 85 23 NTN open CN 121
22209EAKD1 22200 45 85 23 NTN open CN 121
22209EMD1 22200 45 85 23 NTN open CN 116
22209EMKD1 22200 45 85 23 NTN open CN 116
21309C 21300 45 100 25 NTN open CN 114
21309CK 21300 45 100 25 NTN open CN 114
22309 22300 45 100 36 SKF open CN 190
22309-EK 22300 45 100 36 SKF open CN 190
22309EAD1 22300 45 100 36 NTN open CN 206
22309EAKD1 22300 45 100 36 NTN open CN 206
22309EMD1 22300 45 100 36 NTN open CN 206
22309EMKD1 22300 45 100 36 NTN open CN 206

Support Rollers (9)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
STO45 sto 45 85 19.8 FAG open CN 25
NUTR-45-A NUTR 45 85 32 SKF open CN 58.3
NUTR45 nutr 45 85 32 FAG open CN 56
PWTR-45-2RS PWTR 45 85 32 SKF open CN 42.9
PWTR45-2RS-XL pwtr 45 85 32 FAG 2RS CN 45.5
NUTR-45100-A NUTR 45 100 32 SKF open CN 73.7
NUTR45100 nutr 45 100 32 FAG open CN 72
PWTR-45100-2RS PWTR 45 100 32 SKF open CN 53.9
PWTR45100-2RS-XL pwtr 45 100 32 FAG 2RS CN 56

Tapered Roller Bearings (34)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
32909XU 32900 45 68 15 NTN open CN 37.5
32009 32000 45 75 20 FAG open CN 72
32009-SKF 32000 45 75 20 SKF open CN 71.7
32009X 32000 45 75 20 NTN open CN 64
33009 33000 45 75 24 NTN open CN 73.5
32009X-DF matched-df 45 75 40 SKF open CN 123
33109 33100 45 80 26 SKF open CN 104
33109-NTN 33100 45 80 26 NTN open CN 94
30209 30200 45 85 20.75 SKF open CN 81.6
30209-NTN 30200 45 85 20.75 NTN open CN 75
32209 32200 45 85 24.75 FAG open CN 97
32209-NTN 32200 45 85 24.75 NTN open CN 91
32209-SKF 32200 45 85 24.75 SKF open CN 98.7
33209 33200 45 85 32 SKF open CN 132
33209-NTN 33200 45 85 32 NTN open CN 119
430209 4t-430 45 85 47 NTN open CN 129
32209-DF matched-df 45 85 49.5 SKF open CN 169
432209 4t-432 45 85 55 NTN open CN 156
367-362A 4t-inch 45 88.9 20.638 NTN open CN 85
T7FC045 T7FC 45 95 29 NTN open CN 99.5
T7FC045T62-DTC10 matched-dt 45 95 62 SKF open CN 189
30309 30300 45 100 27.25 SKF open CN 132
30309-NTN 30300 45 100 27.25 NTN open CN 123
30309D 30300 45 100 27.25 NTN open CN 106
31309 31300 45 100 27.25 SKF open CN 113
32309 32300 45 100 38.25 SKF open CN 173
32309BR flanged 45 100 38.25 SKF open CN 166
32309CU 32300 45 100 38.25 NTN open CN 145
32309U 32300 45 100 38.25 NTN open CN 170
30309-DF matched-df 45 100 54.5 SKF open CN 227
31309-DF matched-df 45 100 54.5 SKF open CN 194
430309 4t-430 45 100 60 NTN open CN 212
430309DX 4t-430 45 100 60 NTN open CN 183
31309T62-5-DB matched-db 45 100 62.5 SKF open CN 194

Thrust Ball Bearings (14)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
51109 51100 45 65 14 NTN open CN 27.9
51109-SKF 51100 45 65 14 SKF open CN 26.5
51209 51200 45 73 20 NTN open CN 47.5
51209-SKF 51200 45 73 20 SKF open CN 39
53209 53200 45 73 21.3 SKF open CN 39
51309 51300 45 85 28 NTN open CN 80
51309-SKF 51300 45 85 28 SKF open CN 76.1
53309 53300 45 85 30.1 SKF open CN 76.1
52211 52200 45 90 45 SKF open CN 58.5
54211 54200 45 90 49.6 SKF open CN 58.5
51409 51400 45 100 39 NTN open CN 130
51409-SKF 51400 45 100 39 SKF open CN 124
52311 52300 45 105 64 SKF open CN 101
52411 52400 45 120 87 SKF open CN 195

Exact-dimension interchange groups at 45 mm bore

These d×D×B envelopes at a 45 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 45 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 45 mm the catalog spans 50–120 mm outside diameter: the light sections suit compact housings and moderate duty, while the larger ODs use bigger rolling elements and carry substantially more load. Select first by the required dynamic load rating C for the calculated L10 life, then by available radial space.

For a rotating inner ring a k5 shaft seat with an H7 housing is the usual starting point; an interference fit plus thermal growth consumes internal clearance, so C3 is the common industrial default rather than CN. Sealed variants (-2RS, -ZZ) trade a small amount of speed for contamination protection and maintenance-free operation — compare the sealed and open versions of the same envelope before substituting one for the other.

Frequently asked questions

What bearings have a 45 mm bore?

This index lists 355 verified bearing models with a 45 mm (1.772 in) bore across 16 bearing types, from 50 to 120 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 50–120 mm OD options for a 45 mm shaft?

On a fixed 45 mm bore, a smaller outside diameter means a lighter section for limited housing space and moderate load; a larger OD with a wider ring carries more radial and axial load and lasts longer at the same duty. Compare the C dynamic load rating in each model table, then match seal type, internal clearance (CN/C3/C4) and precision class to the actual mounting and operating temperature.

What shaft fit and bore code apply to 45 mm bearings?

A 45 mm bore on a rotating inner ring normally uses a k5 shaft seat with an H7 housing bore (verify against the catalogue for heavy or stationary-ring duty). In the ISO designation system 45 mm is bore code 09 (code × 5), so a 62-series bearing with this bore is the 6209.