Siemens SIMATIC S5 1P 243, Operating Instructions & Installation Instructions

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Table 9-4 Bolt grade BG315 to BG910
Type/size Bolt grade for ambient temperature T
u
≥ -20 °C -40 °C ≤ T
u
< -20 °C
Standard Stainless steel
bolts
Standard Stainless steel
bolts
315.B, 315.C, 315.D, 315.E 8.8 A4–70 8.8 A4–70
355.K, 355.L, 355.M, 355.N, 355.X 8.8 A4–70 8.8 A4–70
355.A, 355.B, 355.C, 355.D 8.8 A4–70 8.8 A4–80
400.K, 400.L, 400.M, 400.N, 400.X 8.8 A4–70 8.8 A4–70
450.K, 450.L, 450.M, 450.N, 450.X
500.K, 500.L, 500.M, 500.N, 500.X
560.K, 560.L, 560.M, 560.N, 560.X 8.8 A4–70 8.8 A4–80
630.K, 630.L, 630.M, 630.N, 630.X 8.8 A4–80 8.8 A4–80
710.A, 710.B, 710.C, 710.X 8.8 A4–70 8.8 A4–80
800.A, 800.B, 800.C, 800.D type of
protection IIB / IIC
8.8 A4–70 / A4-80 8.8 A4–80
910.A, 910.B, 910.C, 8.8 A4–70 8.8 A4–80
9.1.6 Mechanical explosion protection for roller bearings
All machines marked in accordance with directive 94/9/EG must be regularly inspected for
mechanical damage that could constitute a risk of ignition in accordance with IEC / EN
60079‑17 .
● Comply with the following intervals:
– Bearing replacement intervals
– Relubrication intervals
– Grease replacement intervals
– Oil change intervals
● Roller bearing service life
– Replace the roller bearings once the nominal service life is reached. Alternatively, you
can verify they are free of mechanical damage as part of an inspection.
– In the case of roller bearings without a regreasing system, it is ensured that the nominal
service life will only be achieved clearly after achievement of the service life of the grease
in the bearings.
– The roller bearing service life under full specified load is at least 20 000 hours for
machines subject to radial or axial forces.
– The nominal roller bearing service life of machines which are not subject to any forces
is at least 40 000 hours.
● For roller bearings with external oil supply, monitor that lubrication is maintained.
Maintenance
9.1 Inspection and maintenance
LOHER CHEMSTAR 1PS5
86
Operating Instructions 03/2014