SY 1. TF
Pillow block ball bearing unit with extended inner ring and set screw locking, cast iron, ISO standards
Pillow (plummer) block ball bearing units consist of an insert bearing mounted in a cast iron housing that can be bolted to a support surface.
This variant 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
- Lubricated and sealed bearing
- Quick locking onto the shaft
- Cost-effective
Dimensions
| d |
1 in
|
Bore diameter |
| d1 |
≈1.328 in
|
Shoulder diameter of inner ring |
| A |
1.4173 in
|
Base width |
| A1 |
0.8661 in
|
Top width |
| A5 |
0.807 in
|
Standout of end cover |
| B |
1.343 in
|
Width of inner ring |
| B4 |
0.197 in
|
Distance from locking device side face to thread centre |
| H |
1.437 in
|
Height of spherical seat centre |
| H1 |
0.6299 in
|
Foot height |
| H2 |
2.7559 in
|
Overall height |
| J |
4.0157 in
|
Distance between attachment bolts |
| J |
max.4.3307 in
|
Distance between attachment bolts |
| J |
min.3.7008 in
|
Distance between attachment bolts |
| L |
5.1181 in
|
Overall length |
| N |
0.4528 in
|
Diameter of attachment bolt hole |
| N1 |
0.7677 in
|
Length of attachment bolt hole |
| s1 |
0.78 in
|
Distance from locking device side face to raceway centre |
THREADED HOLE
| RG |
1/4-28 UNF
|
Housing thread for the grease fitting |
| R1 |
0.0787 in
|
Axial position of the housing thread |
| Rα |
45 °
|
Angular position of the housing thread |
GREASE FITTING
| DN |
0.256 in
|
Diameter of head sphere of grease fitting |
| SWN |
0.276 in
|
Hexagonal key size for the grease fitting |
| GN |
1/4-28 SAE-LT
|
Thread of grease fitting |
DOWEL PINS
| J6 |
4.724 in
|
Distance of dowel pins |
| J7 |
0.512 in
|
Axial offset of dowel pins |
| N4 |
0.157 in
|
Recommended diameter for dowel pins |
Calculation data
| Basic dynamic load rating |
C |
3 147 lbf
|
| Basic static load rating |
C0 |
1 754 lbf
|
| Fatigue load limit |
Pu |
75 lbf
|
| Limiting speed |
|
7 000 r/min
|
|
|
Limiting speed with shaft tolerance h6
|
Mounting information
| Set screw |
G2 |
1/4-28 UNF
|
| Hexagonal key size for set screw |
|
0.125 in
|
| Recommended tightening torque for set screw |
|
35.403 lbf·in
|
| Recommended diameter for attachment bolts, mm |
G |
10 mm
|
| Recommended diameter for attachment bolts, inch |
G |
0.375 in
|
