Southbend SB1001 - Manual (Page 43)

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 0.0046 0.0049 0.0051
15
15
16 18 19 20 21 19 20 21
15 15 15 15 15 18 18 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