Feature

●1. Low friction, reduce energy loss and extend life.
●2. Easy installation and replacement, efficient operation and high durability.
●3. Widely used in a variety of small mechanical applications, including skateboard wheels, in-line skates and electric motors.

Description

1. Long service life, smooth surface polishing, high efficiency, low noise.
2. With uniform hardness and wear resistance, high temperature resistance.
3. Bearing steel, durable, resistant to heavy deformation.
Item: SMR74ZZ
Structure: Deep Groove
Material: 440C Stainless Steel ( prefix "S" )
Bore Dia (d): 4 mm
Outer Dia (D): 7 mm
Width (B): 2mm
Closures: Rubber Seal
Lubrication: Grease
Magnetic: little
Hardness: 58HRC
Clearance: C0
Grades: ABEC-7
Dynamic Load Rating (Cr) (Newtons): 264
Static Load Rating (Cor) (Newtons): 92
Ball Qty: 8
Ball Dia (Dw): 1.000 mm
Weight: 0.23 g