SIEMENS
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Siemens MD 31.1 · 2016
Configuring guide
Configuring SIP planetary geared motors and SIP planetary gear units
Selection guide for low speed shaft (LSS) end
2
■
Configuring
(continued)
Low speed shaft (LSS)
The low speed shaft can be connected to the customer's
machine in various different ways. A positively-driven or a
friction-locked connection can be used. The following factors
are important in selecting a suitable connection:
1. Operating mode and application
2. Environmental conditions
3. Requirements in terms of installation and detachability of the
connection
4. General drive arrangement:
•
Mounted on machine shaft (piggy back)
•
Mounted on foundation/flange (fixed)
5. Total costs associated with connection
The following summary is intended as a guide to assist with the
selection of a suitable LSS:
Type
Hollow shaft for
shrink disk (D)
Hollow shaft with
spline in accordance
with DIN 5480 (K)
Cylindrical shaft end
with spline in
accordance with
DIN 5480 (A)
1)
Cylindrical shaft end
flange shaft (F)
1)
Cylindrical shaft end
with parallel key (S)
1)
Characteristic
• No additional
coupling element
required
• Machine shaft
manufacture is
simple
• Friction-locked
connection
• No additional
coupling element
required
• Machine shaft
manufacture is
complex
• Positively-driven
connection
• No additional
coupling element
required
• Machine shaft
manufacture is
complex
• Positively-driven
connection
• Additional coupling
element required
• Machine shaft
manufacture is
moderately difficult
to complex
• Friction-locked
connection
• Additional coupling
element required
• Machine shaft
manufacture is
moderately difficult
• Positively-driven
connection
Drive mounted directly on
machine shaft with torque arm
3)
+++
-
2)
-
2)
+++
-
2)
Drive mounted on foundation
4)
+
+
+++
++
+++
Drive mounted on machine
flange
+
+++
+
+
++
Short overall length
+
++
++
+++
+
Small installation space
+
+
+
+++
++
Highly corrosive environment
(C5)
+
+
+
++
+++
Easy to detach
+
++
++
+++
+
Less complex connection
including connecting element
and machine shaft
(most economical)
+++
+
+
++
++
Intermittent duty,
non-periodic and
periodic duty (S3-S9)
+++
++
++
++
+
1)
Hollow shaft for manufacturing reasons.
2)
No axial lock is provided for this shaft type as standard. When directly
mounted on the machine shaft, the spatial position is therefore
under-determined.
3)
For standard torque arms,
see page 10/2
.
4)
For standard foot,
see page 10/5
.
© Siemens AG 2016