SHEAR BOLTS

 ....

Polar SHEAR BOLTS are designed to break if the blade is too dull or hits an obstruction. Replacing the shear bolts with solid bolts could cause severe damage to the gearbox or pull arm. Replace only with special bolts available from Heidelberg or Compound Manufacturing.

Heidelberg, USA
(800) 437-7388

Compound Manufacturing
(718) 523-3083
 

SHEAR BOLT REFERENCE
MACHINE
THREAD
HEAD
A mm
B mm
C mm
NUT
POLAR #
COMPOUND #
71-72
8 x 0.75
12 mm hex
 45 
8
5
std. 12 mm
221987
S105
76
12 x 1.0
22 round
4x32 pin
 47 
11.25
7.5 or
3.0 hole
17 x 22
027920
S104
80
8 x 0.75
12 mm hex
 45 
8
5
12 x 14
208943
S106
82 - 92
9 X 0.75
12 mm oval
54 
9
6.5
12 x 14
206016
S91
92 EMC
14 x 1.0
24 round
4x40 pin
48 
12
9 or
3.1 hole
19 x 24
260469
S107
115
12 x 1.0
17 mm hex
65 
12
8
std. 17 mm
221719
S92
115 EMC
16 x 1.0
25 x 30
D-head
60 
14
11 or
2.8 hole
22 x 30
260506
S102
145-155
14 x 1.0
19 mm hex
80
12
10
std. 19 mm
221301
S93
155 EMC
10 x 1.0
37 round
5 x 50 pin
77
17.8
14 or
4.8 hole
 
260465
S101
old 107
9 x 0.75
12 mm oval
65
9
6.75
12 x 14
 
 

 
 
Home Parts