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Spindles; material specifications

Steel spindles
Material
Tolerance
Fitting

round bright drawn steel ST 37-K
according to DIN 1652
according to ISA h9 (DIN 671)

 
 
Galvanized spindles
Galvanization method
Zinc layer
electrolytic, after preparation of the spindle
± 5 to 8 µm
 
 
Stainless steel spindles
Material
Euro materials code number
Fitting
 bright drawn ferritic-pearlitic stainless steel (AISI 430F)
1.4104
according to ISA h9 (DIN 671)

 
On individual request we can also make use of other qualities of steel, such as machine steel, C 45- K, St 52-3 K, stainless steel 303, stainless steel 304.
 

Load diagram for steel spindles
- statically evenly distributed load
- maximum angular distortion of the spindle is 40' = 0.00116 rad
- maximum permissible material tension 120 N/mm²
- laid loose across two supports; the supports cannot take up any torque at all and the spindle ends can move axially
- clamped fast to two supports; the ends of the spindle can not shift axially at all, the largest possible moment can be absorbed


N.B.
In practice the actual load capacity of a spindle that has been fixed in place will lie between the values "loose" and "clamped" in the above diagram, varying with the stiffness of the frame.