NTN 7311B bearings

7311B, Angular contact ball bearing, pressed cage, contact angle 40°

NTN angular contact ball bearing, steel cage

Measurement system: Metric
Bore diameter: 55.000 mm
Outside diameter: 120.000 mm
Width: 29.000 mm
Cr: 87000 N
C0r: 56500 N
Limiting speed: 5500 r/min
Net weight: 1.420 kg
Number of rows: 1
Contact angle deg: 40
Sealing: Without
Cage: Steel sheet
Bearing material: Steel
Rolling material: Steel
Tolerance class: Normal (PN)

In stock

Technical specification for NTN 7311B

NTN 7311B
PRODUCT DEFINITION
Part Number	7311B
Brand	NTN
Description	Angular contact ball bearing
Net weight	1.420 kg
d	55 mm	Internal diameter
D	120 mm	External diameter
B	29 mm	Width
a	52.000 mm	Charge load application point
α	40°	Contact angle
rs	2.0 mm	Min fillet radius
r1s	1.00 mm	Min fillet radius
PRODUCT PERFORMANCE
C	87 kN	Dynamic load
C0	56.5 kN	Static load
Cu	4.45 kN	Fatigue limit load
N	7 300 tr/min	Oil lubrication limit speed
N	5 500 tr/min	Grease lubrication limit speed
ABUTMENT
da min.	65 mm	Min shoulder diameter IR
db min.	60.5 mm	Min shoulder diameter IR
Da max.	110 mm	Max shoulder diameter OR
Db max.	114.5 mm	Max shoulder diameter OR
ra max.	2 mm	Max shaft & housing fillet radius
r1a max.	1 mm	Max fillet radius

7311B, Brand: NTN, Angular contact ball bearing, Internal diameter 55 mm; External diameter 120 mm; Width 29 mm; 1.420 kg.

NTN 7311B, single row angular contact ball bearing is designed to withstand combined loads with a predominant axial componen. Installed in opposition with another bearing of the same type, it guarantees high mounting rigidity.

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