SIFT BEARING STORE CATALOG

7907A5NSKPrecision / Angular Contact

7907A5 is a NSK precision / angular contact bearing, bore 35 mm, O.D. 55 mm, width 10 mm. Dimensions, drawing, interchanges and price.

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Bore d35mm
Outside dia. D55mm
Width B10mm
Dynamic Cr2,580lbs
Static C0r1,950lbs
Limiting speed22,300rpm
Weight0.073kg
Cr / C0r1.32
Mean dia. dm45mm

Original catalogue drawing - NSK catalogue, page 201

7907A5 NSK Precision / Angular Contact bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D55 mmBore d35 mmWidth B10 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter351.378
DOutside diameter552.1654
BInner-ring / bearing width100.3937

Notes

Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)35
Bore d (in)1.3780
Outside dia. D (mm)55
Outside dia. D (in)2.1654
Width B (mm)10
Width B (in)0.3937

Load ratings & speeds

Basic dynamic load rating Cr (lbs)2580
Basic static load rating Cor (lbs)1950
Limiting speed - grease (rpm)22,300
Limiting speed - oil (rpm)33,400

Weight

Weight (kg)0.073

Mounting dimensions (fillets / shoulders)

Fillet ra (in)0.024
Fillet rb (in)0.012
Shaft shoulder da (in)1.575
Housing shoulder Da (in)1.969
Housing shoulder Db (in)2.067

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
42,86964356
61,9132161,200
81,4355122,844
101,1481,0005,556
157653,37518,750

Basic rating life per ISO 281: L10 = (C/P)3 with C = 11,476 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandNSK
Source catalogueNSK inch product catalogue
Catalogue pagep.203 (dimensions) / p.204 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
61907FAGBall35551010.1 kN0.076
61907-2RSRFAGBall35551010.1 kN0.076
61907-2ZFAGBall35551010.1 kN0.076
B71907-C-T-P4SFAGPrecision / Angular Contact35551011.8 kN0.083
B71907-E-T-P4SFAGPrecision / Angular Contact35551011 kN0.082
HCB71907-C-T-P4SFAGPrecision / Angular Contact3555108.2 kN0.08
HCB71907-E-T-P4SFAGPrecision / Angular Contact3555107.7 kN0.08
HCS71907-C-T-P4SFAGPrecision / Angular Contact3555104.8 kN0.076
HCS71907-E-T-P4SFAGPrecision / Angular Contact3555104.5 kN0.076
HSS71907-C-T-P4SFAGPrecision / Angular Contact3555107 kN0.076

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
6907NSKBall3555102,380 lbs0.073
7907CNSKPrecision / Angular Contact3555102,710 lbs0.073

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
35BNC10NSKPrecision / Angular Contact3562142,990 lbs0.163
35BNC10SN24NSKPrecision / Angular Contact3562142,990 lbs0.163
35BNR10HNSKPrecision / Angular Contact3562142,270 lbs0.164
35BNR10SNSKPrecision / Angular Contact3562142,270 lbs0.164
35TAC72BNSKPrecision / Angular Contact357215--
5207NSKPrecision / Angular Contact35722743 kN0.46
5207AZZNSKPrecision / Angular Contact35722737.5 kN0.46
5307NSKPrecision / Angular Contact358034.956 kN0.76

Request a quotation for 7907A5

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.