UCF 318 (Y/UCF 318)

Square flanged ball bearing unit with set screw locking, cast iron housing, JIS

These square flanged ball bearing units are compliant with Japanese Industrial Standards (JIS).

They consist of an insert bearing, with an extended inner ring and set screw locking, and are suitable for applications where the direction of rotation is constant or alternating. The bearing is mounted in a cast iron housing, which can be bolted to a machine wall or frame. Ball bearing units can accommodate moderate initial misalignment, but normally do not permit axial displacement.

  • Resist high levels of contamination
  • Designed for high temperatures and speeds
  • Accommodate relatively heavy loads
  • Cost-effective

Dimensions

d
90 mm
Bore diameter
d1
121 mm
Outer diameter of inner ring
A
76 mm
Width of housing
A1
31 mm
Flange width
B
96 mm
Width of inner ring
B4
16 mm
Distance from locking device side face to thread centre
Db1
235 mm
Top external diameter
J
216 mm
Distance between attachment bolts
L
279 mm
Overall length
N
35 mm
Diameter of attachment bolt hole
s1
56 mm
Distance from locking device side face to raceway centre
T
100 mm
Overall width
THREADED HOLE
RG
1/8-27 NPT
Housing thread for grease fitting
R1
55.5 mm
Axial position of the housing thread
GREASE FITTING
DN
6.589 mm
Diameter of head sphere of grease fitting
SWN
11.11 mm
Hexagonal key size for the grease fitting
GN
1/8-27 NPT
Thread of grease fitting

Calculation data

Basic dynamic load rating C
143 kN
Basic static load rating C0
108 kN
Fatigue load limit Pu
3.8 kN
Limiting speed
1 950 r/min
Limiting speed with shaft tolerance h6

Mounting information

Set screw G2
M16x1.5
Hexagonal key size for set screw
8 mm
Recommended tightening torque for set screw
50 N·m
Recommended diameter for attachment bolts, mm G
29 mm
Recommended diameter for attachment bolts, inch G
1.125 in

Properties

Housing type Flanged
Flanged housing type Square
Number of bolt holes for fasteners 4
Fastening bolt hole type Plain
Retaining feature, inner ring Set screws
Bore type Cylindrical
Rubber seating ring Without
Material, housing Cast iron
Material, bearing Bearing steel
Coating Without
Sealing, bearing Seal and flinger on both sides
Sealing type Contact, standard
Sealing, unit Without
Lubricant Grease
Relubrication hole With
Grease fitting With
Compliance with standard
JIS
Purpose specific
For material handling applications
Material, housing
Cast iron
Sealing, bearing
Seal and flinger on both sides
Sealing type, bearing
Contact, standard
Sealing, unit
Without
Coating
Without

Logistics

Product net weight 18.8 kg
eClass code 23-05-16-02
UNSPSC code 31171536

Component

Insert bearing with set screw locking and extended inner ring UC 318

(UCF318) (Y/UCF318)

Additional information

Weight 18.8 kg
Dimensions 25 × 25 × 9 cm
Colour