Name: Internet Famous Nsk Spherical Roller Bearings , Cylindrical Bore Bearings 21309eake4c3,d=45 For Home [lq0asmL7]
Brand: technovaprecision.com
SKU: HBS24613604496
Price: 33.99 USD
Availability: InStock
Rating: 4.53 (553 reviews)

Internet Famous Nsk Spherical Roller Bearings , Cylindrical Bore Bearings 21309eake4c3,d=45 For Home [lq0asmL7]

Bearing Numbers	Boundary Dimensions (mm)				Basic Load Ratings (kN)		Limiting Speeds (min-1)				Constant e	Axial Load Factors			Mass (kg) approx.

	d	D	B	r min.	C_r	C_0r	Thermal Reference	Mechanical	Grease	Oil
												Y₂	Y₃	Y₀
21309EAKE4C3	45	100	25	1.5	149	144	6000	9000	5000	6300	0.23	4.3	2.9	2.8	0.96

DESIGN, TYPES, AND FEATURES

Various types of high load capacity spherical roller bearings are available. Types EA, C and CD have pressed-steel cages, and type CA has machined-brass cages. EA-type bearings listed here are classified as NSKHPSTM bearings, which offer particularly high load-carrying capacity, high limiting speeds, and superior performance under high-temperature operating conditions up to 200 °C.
An oil groove and holes are located in the outer ring to supply lubricant, and the bearing numbers are suffixed with E4.
To use bearings with oil grooves and holes, an oil groove should be located in the housing bore since depth for the groove in the bearing is limited. The dimensions of the oil groove and number of holes present are listed in Tables 1 and 2.
When bearings with a hole for a locking pin to prevent outer ring rotation are required, please contact NSK.

□Formulation of Bearing Designations

Spherical Roller Bearings
　　Example:

①Bearing Series	239, 230, 240, 231, 241, 222, 232, 213, 223 : Spherical roller bearings
②Bore number	Bore number indicates bore diameter. Bore number X 5 (mm)
③Internal design	EA, CA : High load capacity
④Cage	M : Machined-brass cage (for CA Design) Omitted: Pressed-steel cage (for EA Design)
⑤⑥Ring design	K : Tapered bore of inner ring (taper 1 : 12) K30 : Tapered bore of inner ring (taper 1 : 30) E4 : Lubricating groove in outside surface and holes in outer ring
⑦Internal clearance	Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, C5 : Clearance greater than C4
⑧Tolerance class	Omitted : ISO Normal, P6 : ISO Class 6, P5 : ISO Class 5, P4 : ISO Class 4
⑨Special specification	S11 ; Dimensional stabilizing treatment: working temperature under 200 °C (omitted for EA design)
⑩NSKHPSTM	H : NSKHPSTM designation Tolerance Class : ISO Normal