SIR 25 ESRod end, requires maintenance, female thread with clamping screws
These SKF rod ends contain a spherical plain bearing with a steel/steel sliding contact surface combination. The bearing requires maintenance and can be relubricated via grease fitting in the housing and via the shaft. The female thread is available with a left- (prefix SIL) or right-hand thread.
| Maintenance |
Relubrication required
|
| Sliding contact surface combination |
Steel/steel, standard
|
| Material, inner ring |
Bearing steel
|
| Material, outer ring |
Bearing steel
|
| Sealing |
Without
|
| Attachment feature, rod end shank |
Right-hand female thread and clamping screws
|
Dimensions
| d |
25 mm
|
Bore diameter |
|---|---|---|
| d2 |
max. 58 mm
|
Diameter head |
| B |
20 mm
|
Width inner ring |
| G |
M 16×1.5
|
Thread |
| C1 |
max. 23.5 mm
|
Width head |
| h1 |
50 mm
|
Height shank end face – centre rod end eye |
| α |
7 °
|
Angle of tilt |
| dk |
35.5 mm
|
Raceway diameter inner ring |
| d4 |
max. 26 mm
|
Housing diameter shank |
| l3 |
min. 17 mm
|
Length threat |
| l4 |
max. 81 mm
|
Length (height) housing |
| l7 |
min. 27 mm
|
Distance shank chamfer – centre rod end eye |
| N |
max. 46 mm
|
Width shank |
| N1 |
max. 23.5 mm
|
Thickness shank base for clamping bolts |
| r1 |
min. 0.6 mm
|
Chamfer dimension bore |
Bolts with internal hexagon
| Size bolt with internal hexagon |
M 8
|
| Tightening torque bolt with internal hexagon |
23 N·m
|
Calculation data
| Basic dynamic load rating | C |
48 kN
|
|---|---|---|
| Basic static load rating | C0 |
52 kN
|
| Specific dynamic load factor | K |
100 N/mm²
|
| Material constant | KM |
330
|
Mass
| Mass rod end |
0.49 kg
|
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