SYF 45 TF

Short base pillow block ball bearing unit with extended inner ring and set screw locking, cast iron

Short base pillow (plummer) block ball bearing units consist of an insert bearing mounted in a cast iron housing.

This variant has threads for attachment bolts and is suitable for applications with both constant and alternating directions of rotation. It has an inner ring extended on both sides and is locked onto the shaft by tightening a set screw on the inner ring, making it easy to mount.

  • Strong
  • Ready to mount
  • Designed for a constant and alternating rotation
  • Lubricated and sealed bearing
  • High degree of stiffness
  • Narrow design

Dimensions

d
45 mm
Bore diameter
d1
56.8 mm
Shoulder diameter of inner ring
A
48 mm
Base width
A1
32 mm
Top width
B
49.2 mm
Width of inner ring
B4
8 mm
Distance from locking device side face to thread centre
H
54 mm
Height of spherical seat centre
H2
107.5 mm
Overall height
J
95.3 mm
Distance between attachment bolts
L
120 mm
Overall length
s1
30.2 mm
Distance from locking device side face to raceway centre
THREADED HOLE
RG
1/4-28 UNF
Housing thread for the grease fitting
R1
4 mm
Axial position of the housing thread
Rα
45 °
Angular 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

Calculation data

Basic dynamic load rating C
33.2 kN
Basic static load rating C0
21.6 kN
Fatigue load limit Pu
0.915 kN
Limiting speed
4 300 r/min
Limiting speed with shaft tolerance h6

Mounting information

Thread for attachment bolts G
M12
Thread length G1
22 mm
Set screw G2
M8x1
Hexagonal key size for set screw
4 mm
Recommended tightening torque for set screw
6.5 N·m
SKU: SYF 45 TF-SKF Categories: ,

Properties

Housing type Pillow block
Number of bolt holes for fasteners 2
Fastening bolt hole type Threaded
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
Not standardized
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 1.95 kg
eClass code 23-05-08-02
UNSPSC code 31171536

Component

Insert bearing with set screw locking and extended inner ring YAR 209-2F
Short base pillow block housing for insert bearings, cast iron SYF 509

(45X120X54.2) (SYF45TF)

Additional information

Weight 1.95 kg
Size (mm)

Colour

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