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Dimensional Chart
Model
Number
Includes
Clutch #
(see HU Series)
Bore Range
(see Bore chart)
A
Housing O.D.
B
Mounting Dia.
+.000/-.001
C
Housing I.D.
(Clutch O.D.)
D
Length of
Clutch Hsg.
E
Length of
Mounting Dia.
F
Fastener
Centerline
HA53
HU53
-2 thru -4
13/16
.500
.626/.626
.437
.625
.203
HA54
HU54
-2 thru -4
13/16
.500
.625/.626
.562
.625
.265
HA63
HU63
-4 thru -M10
1-5/16
.875
1.023/1.025
.656
1.062
.283
HA64
HU64
-4 thru -M10
1-5/16
.875
1.023/1.025
.906
1.062
.408
HA73
HU73
-8 thru -12
2
1.250
1.624/1.626
.953
1.437
.281
HA74
HU74
-8 thru -12
2
1.250
1.624/1.626
1.328
1.437
.562
Bore & Fastener Chart
Bore #
Bore Dia .
Set Screw
Roll Pin
Keyway
(+.001"/-.000")
(-T OR -TT)
(-R)
(-K, KT,OR -KTT)
2
1/8 (.1250")
#3-48
3/64"
N/A
M4
4mm(.1575")
m3 x .5
2mm
N/A
3
3/16 (.1875")
#3-48
1/16"
1/16"
M5
5mm (.1969")
m4 x .7
2mm
2mm
M6
6mm (.2362")
m4 x .7
2mm
2mm
4
(50 series)
1/4 (.2500")
#3-48
5/64"
1/16"
4
(60 series)
1/4 (.2500")
#5-40
3/32"
1/16"
M7
7mm (.2756")
m4 x .7
2.5 mm
2mm
5
5/16 (.3125")
#5-40
1/8"
3/32"
M8
8mm (.3150")
m4 x .7
2.5mm
2mm
M9
9mm (.3543")
m4 x .7
2.5mm
3mm
6
3/8 (.3750")
#5-40
1/8"
3/32"
M10
10mm (.3937")
m5 x .8
2.5mm
3mm
M11
11mm (4331")
m5 x .8
3mm
4mm
7
7/16 (.4375")
#8-32
1/8"
3/32"
M12
12mm (.4724")
m6 x 1.0
3mm
4mm
8
1/2 (.5000")
#10-32
1/8"
1/8"
M13
13mm (.5118")
m6 x 1.0
3mm
5mm
M14
14mm (.5512")
m6 x 1.0
3mm
5mm
9
9/16 (.5625")
#10-32
1/8"
1/8"
M15
15mm (.5906")
m6 x 1.0
4mm
5mm
10
5/8 (.6250")
#10-32
3/16"
1/8"
M16
16mm (.6299")
m6 x 1.0
4mm
5mm
M17
17mm (.6693")
m6 x 1.0
5mm
5mm
11
11/16 (.6875")
#10-32
3/16"
1/8"
M18
18mm (.7087")
m6 x 1.0
5mm
6mm
M19
19mm (.7480")
m6 x 1.0
5mm
6mm
12
3/4 (.7500")
#10-32
3/16"
1/8"
Material Chart
Material
Code
Material Type
Finish
Status
A
STEEL
Standard-
all series
Block-Case Hardened Steel
Light Oil
Rollers-Hardened 440C Stainless Steel
Passivate
Retainers-304 Stainless Steel
Passivate
Springs-302 Stainless Steel
Passivate
Fasteners-Steel
Black Oxide
Housing(where applicable)-Mild Steel or Pre-hard Steel
Black Oxide
S
STAINLESS STEEL
Standard-50 series
(Optional-60&70 Series)
Block-302 Stainless Steel
Passivate
Rollers-Hardened 440C Stainless Steel
Passivate
Retainers-304 Stainless Steel
Passivate
Springs-302 Stainless Steel
Passivate
Fasteners-Stainless Steel
Passivate
(NOTE: HARDENED STAINLESS UNITS AVAILABLE ON REQUEST)
Fastener Type Chart
Fastener Choice
Description
A
PLAIN (NO FASTENER)
T
ONE SET SCREW
TT
TWO SET SCREWS 90° APART
R
ROLL PIN
RT
ROLL PIN WITH ONE SET SCREW AT 90°
K
KEYWAY
KT
KEYWAY WITH ONE SET SCREW
(over keyway where possible)
KTT
KEYWAY WITH TWO SET SCREWS AT 90°
NOTE: ALL "HB" UNITS COME STANDARD WITH KEYSLOT ON HOUSING O.D.
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375 Morse St., Hamden, CT 06517
Phone:(203) 777-5395
Fax: (203) 773-1976 •
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