Item # MA1221EV, Cylindrical Roller Bearing - Separable, Plain Inner Ring, Outer Ring w/ Two Ribs On NTN Bearing Corp. of America

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	Item # MA1221EV, Cylindrical Roller Bearing - Separable, Plain Inner Ring, Outer Ring w/ Two Ribs

Unit of Measure: Imperial Metric Both

Order Now · Technical Specifications · Dimensional Specifications

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Ordering Options		Find a Distributor Contact NTN Customer Relations Order through NTN DOL (Authorized Distributors Only)

Technical Specifications

Type		Cylindrical Roller Bearing

Bore Type		Round

Material		Hardened Alloy Steel

Cage Material		One Piece Steel

Configuration		One

Tolerance		ISO Class 0 (RBEC 1)

Oil Hole		w/o Oil Hole

Radial Internal Clearance		CN

Static Load Rating		68500 lbf 305000 N 305.00 kN

Dynamic Load Rating		53500 lbf 238000 N 238.00 kN

Enclosure		Open

Operating Temperature Range		-40 to 250 ºF -40 to 120 ºC

Dimensional Specifications

		Cylindrical Roller Bearing - Separable, Plain Inner Ring, Outer Ring w/ Two Ribs - Dimensions larger image

B		4.1339 in 105.000 mm

D		7.4803 in 190.000 mm

W		1.4173 in 36.000 mm

A		4.9811 in 126.520 mm

H		6.3390 in 161.010 mm

R		0.1559 in 3.960 mm

U (Plain Rings)		4.7795 in 121.400 mm

V (Rib Rings)		4.9803 in 126.500 mm

X (Plain Rings)		6.9016 in 175.300 mm

Z (Rib Rings)		6.6299 in 168.400 mm

r		0.0799 in 2.030 mm

Item # MA1221EV, Cylindrical Roller Bearing - Separable, Plain Inner Ring, Outer Ring w/ Two Ribs