Zero-Max Aluminum Single Flex Six Bolt Composite Disc Couplings - Manual (Page 3)

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Table 2
Set Screw Torque Table
Screw Size Wrench
Size
Torque
(in lb)
Torque
(Nm)
#10-32unf 0.094 36 4.1
¼-20unc 0.125
87 9.8
3/8-16unc 0.188 290 33
½-13unc 0.250 620 70
¾-10unc 0.375 2400 271
1”-8unc 0.563 5000 564
Metric
M5 x 0.8 2.5mm 35 4.0
M6 x 1.0 3mm 64 7.2
M8 x 1.25 4mm 150 17
M10 x 1.50 5mm 290 33
M12 x 1.75 6mm 480 54
M20 x 2.50 10mm 2100 237
M24 x 3.00 12mm 3860 440
Clamp Collar
Slot
(4) Hub Slots
90°
45°
Clamp Hub Assembly
Before tightening the clamp collar screw, orient the clamp collar 90 degrees from the keyway centerline
(See Fig 3). If there is no keyway, orient the clamp collar 45 degrees from one of the hub slots (See Fig
3). Tighten clamp screw to tightening torque shown on clamp collar.
Fig. 1
Set Screw Style Hub
Fig. 2
Clamp Style Hub
Fig. 4
QD Bushing Style Hub
Fig. 3
Clamp Slot Location
QD Bushing Hub Assembly
When tightening the QD Bushing bolts the Hub will be pulled toward the
bushing flange. The amount of movement is generally 0.06 to 0.10 inches
(1.5 to 2.5mm) per hub. Install one hub/bushing assembly on the shaft and
tighten the QD bushing to specifications. Place the second hub/bushing
assembly on the shaft with a hub separation of 0.08 less than the “C”
dimension shown in the Table 1 on page 2, See diagram 1. Torque the QD
bushing bolts to the manufacturer’s specification and verify hub separation
and misalignment. Loosen bolt and adjust assembly as needed until hub
separation and misalignment are within specifications. Consult QD bushing
manufacturer’s documentation for proper tightening torque and sequence.
See clamp collar
labels for
tightening torque