UCFC 204 (Y/UCFC 204)

Round flange ball bearing unit with extended inner ring and set screw locking, cast iron housing, JIS

These round flanged ball bearing units are compliant with JIS standards.

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
20 mm
Bore diameter
d1
28.7 mm
Outer diameter of inner ring
A
26 mm
Width of housing
A1
7 mm
Flange width
A3
5 mm
Height of spherical seat centre
A5
20.5 mm
Standout of end cover
B
31 mm
Width of inner ring
B4
5 mm
Distance from locking device side face to thread centre
Db
67.1 mm
External diameter
Dc
62 mm
Centering diameter
J
78 mm
Pitch diameter of attachment bolts
J1
55.2 mm
Distance between attachment bolts
L
100 mm
Outside diameter
N
12 mm
Length of attachment bolt hole
s1
18.3 mm
Distance from locking device side face to raceway centre
T
28.3 mm
Overall width
THREADED HOLE
RG
1/4-28 UNF
Housing thread for grease fitting
R1
12 mm
Axial position of the housing thread
GREASE FITTING
DN
6.6 mm
Diameter of head sphere of grease fitting
SWN
7.94 mm
Hexagonal key size for the grease fitting
GN
1/4-28 UNF
Thread of grease fitting

Calculation data

Basic dynamic load rating C
12.7 kN
Basic static load rating C0
6.7 kN
Fatigue load limit Pu
0.285 kN
Limiting speed
6 500 r/min
Limiting speed with shaft tolerance h6

Mounting information

Set screw G2
M6x1
Hexagonal key size for set screw
3.05 mm
Recommended tightening torque for set screw
4 N·m
Recommended diameter for attachment bolts, mm G
10 mm
Recommended diameter for attachment bolts, inch G
0.375 in

Properties

Housing type Flanged
Flanged housing type Round
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 Optional end cover
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
Optional end cover
Coating
Without

Logistics

Product net weight 0.7 kg
eClass code 23-05-16-02
UNSPSC code 31171536

Recommended product

End cover for bearing units ECY 204

(UCFC204) (Y/UCFC204)

Additional information

Weight 0.7 kg
Colour

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