Schematic

Important Note:
Set Screw Holes are not fully threaded, they are oversized to the threads
Hubs are designed so that the bore can be increased by upto 1mm
T81 HUB
0.800
Ø0.750
Ø0.950
0.800
0.500
0.800
Size (1/16in or mm)
Number of wheels
B o r e
S h a p e
(
R = r o u n d ,
H = H e x )
Stock Part Number:
T81H-busn
Marking
Unit (S=in, M=mm)
Inch
Up - On/1
Down - Off/0
Binary
1/16 in
0.750
Metric
Up - On
Down - Off
Binary
mm
Metric
Down
Up
3mm
T81H-RM31
4mm
T81H-RM41
5mm
T81H-RM51
6mm
T81H-RM61
7mm
T81H-RM71
8mm
T81H-RM81
9mm
T81H-RM91
10mm
T81H-RMA1
11mm
T81H-RMB1
12mm
T81H-RMC1
1/8
T81H-RS21
3/16
T81H-RS31
1/4
T81H-RS41
5/16
T81H-RS51
3/8
T81H-RS61
1/2
T81H-RS81
7/16
T81H-RS71
3/8 Hex
T81H-HS61
1/2 Hex
T81H-HS81
T81H
Quick Reference
DRAFT - 13 Sep 2016