SAF 22520
Pillow block housing with included bearing
SAF and SAW split pillow blocks use a two-piece, cast metal housing with inch dimensions.
With the included SKF bearings, seals, and related components, they provide a tailored solution to achieve maximum service life and reduce maintenance requirements for rotating equipment. These pillow blocks have been developed to be the best choice for design, quality, robustness, and cost efficiency.
- Robust design for tough operating conditions
- Customizable configurations
- Suitable for locating and non-locating bearing positions
- Cost-effective bearing solution
Dimensions
| da |
87.313 mm
|
Shaft diameter |
| Da |
180 mm
|
Diameter of bearing seat |
|
G7
|
Tolerance class of bearing seat |
| Ca |
55.804 mm
|
Width of bearing seat |
| A1 |
111.125 mm
|
Housing foot width |
| A2 |
153.194 mm
|
Width |
| H |
217.488 mm
|
Height |
| H1 |
114.3 mm
|
Centre height of bearing seat |
| H2 |
44.45 mm
|
Foot height |
| J |
min.295.275 mm
|
Distance between attachment bolts |
| J |
max.333.375 mm
|
Distance between attachment bolts |
| L |
387.35 mm
|
Length |
| N1 |
25.4 mm
|
Width of attachment bolt hole |
| S |
4.763 mm
|
Offset of locating bearing |
THREADED HOLES
| R1 |
58.738 mm
|
Distance of drain plug from centre |
| R2 |
30.163 mm
|
Height of drain plug position |
| RG |
3/8-18 NPT
|
Thread of drain hole |
| PG |
1/4-18 NPT
|
Thread for grease fitting in cap |
Calculation data
| Dynamic load rating |
C |
433 kN
|
| Static load rating |
C0 |
490 kN
|
| Fatigue load limit |
Pu |
49 kN
|
| Reference speed |
|
3 400 r/min
|
| Limiting speed |
|
4 500 r/min
|
| Limiting value |
e |
0.24
|
| Calculation factor |
Y1 |
2.8
|
| Calculation factor |
Y2 |
4.2
|
| Calculation factor |
Y0 |
2.8
|
Recommended safe loads
| P60 |
136 kN
|
Safe load at 60° load angle |
| P90 |
81.4 kN
|
Safe load at 90° load angle |
| P120 |
50.7 kN
|
Safe load at 120° load angle |
| P150 |
46.3 kN
|
Safe load at 150° load angle |
| P180 |
55.6 kN
|
Safe load at 180° load angle |
| Pa |
36.1 kN
|
Safe load, axial |
Materials
| Housing material |
Cast iron
|
| Paint, corrosion protection |
Paint – in accordance with ISO 12944-2, corrosivity category C2
|
Mounting information
| Cap bolt |
|
3/4-10 UNC x 4
|
| Number of cap bolts |
|
2
|
| Recommended tightening torque for cap bolts |
|
203.373 N·m
|
| SAE grade of cap bolt |
|
5
|
| Recommended diameter of attachment bolts |
G |
22.225 mm
|
LOCATING BEARING POSITION
| Required locating (stabilizing) ring |
|
SR-20-17 |
| Number of required locating rings |
|
1
|
LUBRICATION
| Initial grease fill, 20% |
|
340.194 g
|
| Initial grease fill, 40% |
|
526.167 g
|
| Oil level |
h |
42.069 mm
|
