Introduction hub preparation – Nexen TL60-A 951243 User Manual
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FORM NO. L-20138-U-0912
INTRODUCTION
HUB PREPARATION
NOTE: This section pertains only to units with a customer machined bore. If your Torque Limiter has been
bored by Nexen, proceed with INSTALLATION.
TL-A
After the Hub has been finished bored, drill and tap the
Hub for Set Screws. Set Screw locations are over the
keyway, and at 90
o
of the keyway. Models TL10-A and
TL15-A require two Set Screws located on the Drive
Flange end of the Hub. Models TL20-A and higher
require two Set Screws located on both ends of the
Hub (Refer to Table 1 for Set Screw sizes).
TL-AC
After the Hub has been finished bored, make four saw
cuts in the Drive Flange end of the Hub. Locate the first
saw cut 45
o
from the keyway and the other three saw
cuts at 90
o
increments from the first saw cut (Refer to
Table 2 for saw cut dimensions).
TABLE 1
TABLE 2
Nexen's air-engaged, single-position Torque Limiters provide overload protection for power transmission equipment,
thus protecting machinery and product from jam-ups and resultant down time expense.
The totally enclosed construction of Nexen's Enclosed Torque Limiter allows for usage in wet or humid conditions and
is acceptable for use in federally inspected meat and poultry plants.
A Proximity Sensor (located on the Torque Limiter) senses the onset of an overload condition and releases air pressure
at the 3-way valve to provide split second disengagement of the Torque Limiter.
The single position feature resets in the same position when the unit is engaged, providing exact timing of two
components.
SET SCREW SIZES
MODEL
US
METRIC
QTY
TL10-A10
10-24
M5-0.8
2
TL15-A
10-24
M5-0.8
2
TL20-A
1/4-20
M6-1.0
4
TL30-A
5/16-24
M6-1.0
4
TL40-A
3/8-24
M10-1.5
4
TL50-A
3/8-24
M10-1.5
4
TL60-A
1/2-13
M12-1.75
4
TL70-A
1/2-13
M12-1.75
4
TL80-A
1/2-13
M12-1.75
4
SAW CUT DIMENSIONS
MODEL
CUT WIDTH
CUT DEPTH
TL20-AC
0.06" [1.52 mm]
0.96" [25.4 mm]
TL30-AC
0.06" [1.52 mm]
0.96" [25.4 mm]
TL40-AC
0.06" [1.52 mm]
0.96" [25.4 mm]
TL50-AC
0.06" [1.52 mm]
0.96" [25.4 mm]
TL60-AC
0.06" [1.52 mm]
0.96" [25.4 mm]
TL70-AC
0.06" [1.52 mm]
0.96" [25.4 mm]
TL80-AC
0.06" [1.52 mm]
0.96" [25.4 mm]