FY 20 TF

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

These square flanged ball bearing units are compliant with ISO 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
28.2 mm
Outer diameter of inner ring
A
29.5 mm
Width of housing
A1
11 mm
Flange width
A3
3.2 mm
Depth of centring recess
A5
20.5 mm
Standout of end cover
B
31 mm
Width of inner ring
B1
31 mm
Overall bearing width
B4
4.5 mm
Distance from locking device side face to thread centre
Db1
57 mm
Top external diameter
Db2
63 mm
Base external diameter
Dc
68.3 mm
Diameter of housing centering recess
J
63.5 mm
Distance between attachment bolts
L
86 mm
Overall length
N
11.5 mm
Diameter of attachment bolt hole
s1
18.3 mm
Distance from locking device side face to raceway centre
T
37.3 mm
Overall width
THREADED HOLE
RG
1/4-28 UNF
Housing thread for grease fitting
R1
20.5 mm
Axial position of the housing thread
GREASE FITTING
DN
6.5 mm
Diameter of head sphere of grease fitting
SWN
7 mm
Hexagonal key size for the grease fitting
GN
1/4-28 SAE-LT
Thread of grease fitting
DOWEL PINS
J6
74 mm
Distance of dowel pins
J7
16 mm
Axial offset of dowel pins
N4
4 mm
Recommended diameter for dowel pins

Calculation data

Basic dynamic load rating C
12.7 kN
Basic static load rating C0
6.55 kN
Fatigue load limit Pu
0.28 kN
Limiting speed
8 500 r/min
Limiting speed with shaft tolerance h6

Mounting information

Set screw G2
M6x0.75
Hexagonal key size for set screw
3 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 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 Optional end cover
Lubricant Grease
Relubrication hole With
Grease fitting With
Compliance with standard
ISO
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

Component

Square flanged housing for insert bearings, cast iron FY 504 M
Insert bearing with set screw locking and extended inner ring YAR 204-2F

Recommended product

End cover for bearing units ECY 204

(20X86X37.3) (FY20TF)

Additional information

Weight 0.54 kg
Size (mm)

Colour

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