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Southbend SB1001 User Manual

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Page of 76
For Machines Mfg. Since 8/11
Model SB1001 8K
™
 Lathe
-41-
O P E R A T I O N
Setting Power Feed Rate
Working at the lathe, follow along with the 
example below to better understand how to set 
up the lathe for the desired power feed rate.
Tools Needed 
Qty
Wrench 13mm .......................................................2
Setting Power Feed Rate of 0.0041"/rev.:
1.
  DISCONNECT LATHE FROM POWER!
2.
  Open the end cover.
3.
  Loosen the pulley shaft hex nuts and 
tensioning thumb screw shown in 
Figure 54.
4. 
Position the pulley shafts so that the timing 
belts are loose.
5.
  Locate the column in the feed rate chart for a 
feed rate of 0.0041"/rev. (see Figure 55).
Figure 55. Feed rate chart column for a rate of
0.0041"/rev.
0.0030 0.0033 0.0037 0.0039 0.0041 0.0043 0.004
15
15
16
18
19
20
21
19
15
15
15
15
15
18
B
C
in/
Feed Rate
of 0.0041"/rev.
Pulley
Identification
6.
  Arrange the timing belts and pulleys as 
indicated in the illustration above the feed 
rate chart (see Figures 56–57) and the 
pulley identification column in the chart.
Figure 56. Feed rate pulley and timing belt 
configuration.
16
120
120
48
B
48
140
48
C
Figure 57. Feed rate pulley and timing belt 
identification.
16T
48T
48T
B-15T
C-20T
140
Belt
120
Belt
120
Belt
a.
  Make sure the 16T pulley is on the 
upper left pulley shaft.
Note:
 To remove a pulley, remove the hex 
nut from the pulley shaft, then remove 
the pulley. Take care not to displace the 
shaft key. When re-installing the pulley, 
align the pulley keyway with the shaft 
key, then secure it in the reverse order.
Important: 
Only tighten the hex nut until 
it is slightly snug—enough to keep the 
pulley on the shaft. Overtightening it 
may damage the shaft and bushings.
Figure 54. End pulley shaft hex nuts and tensioning 
thumb screw.
Shaft
Hex Nuts
Tensioning Thumb Screw