BC2B 326379/HA4-Cylindrical roller bearing-FGFA bearings

BC2B 326379/HA4 Double row cylindrical roller bearing

Cylindrical roller bearings feature cylindrical rollers as rolling elements and are classified as separable bearings. The rollers and raceways engage in line contact, enabling high load-carrying capacity. Primarily designed to accommodate radial loads, these bearings exhibit minimal friction between the rolling elements and the flange of the bearing ring, making them suitable for high-speed rotation. They offer exceptional load-carrying capability and maximum rotational speeds.

Design variant/feature

NN.1/C2W33

Dimensions

d	800 mm	Bore diameter
D	1 260 mm	Outside diameter
B	375 mm	Overall bearing width
d₁	≈963 mm	Shoulder diameter inner ring
E	1 161 mm	Raceway diameter outer ring
b	22.3 mm	Width of annular groove
K	12 mm	Diameter lubrication hole
r_1,2	min.9.5 mm	Chamfer dimension inner ring
r_3,4	min.9.5 mm	Chamfer dimension outer ring
s	max.11 mm	Permissible axial displacement from the normal position of one bearing ring relative to the other

Abutment dimensions

d_a	min.840 mm	Abutment diameter spacer sleeve
D_a	min.1 175 mm	Abutment diameter spacer sleeve / housing
D_a	max.1 220 mm	Abutment diameter spacer sleeve / housing
r_a	max.8 mm	Fillet radius
r_b	max.8 mm	Fillet radius

Calculation data

Basic dynamic load rating	C	12 800 kN
Basic static load rating	C₀	28 000 kN
Fatigue load limit	P_u	1 800 kN
Reference speed		300 r/min
Limiting speed		430 r/min
Calculation factor	k_r	0.26

Tolerances: Normal, P6, P5
Radial internal clearance: cylindrical bore, tapered bore

Basic Parameters

Bearing Inner Diameter：800 mm
Bearing Outer Diameter：1260 mm
Bearing Thickness：375 mm

Wafangdian Fafuge Bearing Co., Ltd., rooted in Wafangdian Bearing Industry Base, is an emerging professional bearing manufacturer. Drawing on the base’s profound industrial heritage, we have upheld craftsmanship since inception, integrated precision manufacturing into R&D and production, and focused on the R&D and refined production of spherical roller bearings.