Item # 1221KC3, Self Aligning Ball Bearings w/ Tapered Bore On NTN Bearing Corp. of America

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	Item # 1221KC3, Self Aligning Ball Bearings w/ Tapered Bore

Unit of Measure: Imperial Metric Both

Order Now · Technical Specifications · Dimensional Specifications

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

Technical Specifications

Type		Self Aligning Ball Bearing

Bore Type		Tapered

Material		High Carbon Chrome Steel

Cage Type		Pressed

Cage Material		Steel

Ball Material		Steel

Limiting Speed - Oil		3600 RPM

Limiting Speed - Grease		3000.0 RPM

Y1		3.60

Y2		5.50

Y0		3.70

Taper		1:12

Seal Type		None

Seal Material		None

Precision		Class 0

Configuration		One

Radial Internal Clearance		C3

Static Load Rating		7300 lbf 32500 N 32.50 kN

Dynamic Load Rating		16900 lbf 75000 N 75.00 kN

Enclosure		Open

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

Dimensional Specifications

		Self Aligning Ball Bearings w/ Tapered Bore - Dimensions larger image

d		4.1339 in 105.000 mm

D		7.4803 in 190.000 mm

B		1.4173 in 36.000 mm

r		0.0827 in 2.100 mm

da min		4.5669 in 116.000 mm

Da max		7.0472 in 179.000 mm

ras max		0.0787 in 2.000 mm

Item # 1221KC3, Self Aligning Ball Bearings w/ Tapered Bore