RKB NNU4992KM P61 ZB W33X

Specifications

Brand	RKB
Item Number	NNU4992KM P61 ZB W33X RKB
Category	Cylindrical Roller Bearing Double Row

Weight and Dimensions

Inner (d) MM	460
Outer (D) MM	620
Width (B) MM	160
Inner (d) Inch	18.1102
Outer (D) Inch	24.4094
Width (B) Inch	6.2992
Weight (kg)	135 kg

Product Properties

Bore	K - 1:12 Tapered Bore (Standard for Most Types)
Seal	No Seal
Cage Type	M - Brass Cage
External Modification	W33
Radial Internal Play	C1 Internal Play (Less than C2)
Precision	P6 Precision (Higher than Standard)
Heat Stabilization	No Heat Stabilization - Temperatures up to 120 °C

Suffix description

K	Tapered Bore, Taper 1:12
M	Machined Brass Cage, Located On The Rolling Elements
P61	Combination Of P6 (Dimensional And Running Accuracy To ISO Tolerance Class 6 (Better Than Normal).) And
C1	(Radial Clearance Less Than C2.)
ZB	Optimized Roller Profile
W33X	Same As W33 (Lubrication Groove And Three Holes In Bearing Outer Ring) But. With Six Lubrication Holes