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I – Inboard Mount
O – Outboard Mount
X – Balanced
(tp) – Patented TruPilot Feature
(a) – Unequally spaced exciter ring mounting
(b) – Equally spaced exciter ring mounting
(c) – Peripheral mount pilot
(d) – Furnished with set screw holes
(e) – Notched
(f) – For ball seat or hub piloted applications
(o) – OEM captive part number
Active Part Numbers
In Order by Part Number
Active Part Numbers
In Order by Size
Obsolete Part Numbers
In Order by Part Number
Gunite
No.
Drum
Weight
Drum
Mount
Drum
Type
Wheel
Type
Brake Size
Overall
Depth
Width
of Brake
Surface
Pilot
Dia.
Bolt
Circle
Dia.
Bolt Holes
Special Information
No.
Size
3765X 150
O BBD Disc
16.50x8.00 10.94 8.44
8.53 11.25
10
0.84
Heavy duty version of
3737X.
3767
81
I
AAA Spoke
16.50x5.00 6.12
5.38 9.25 11.25
6
0.78
3767A 81
I
AAA Spoke
16.50x5.00 6.12
5.38 9.25 11.25
6
0.78
3767AX 81
I
AAA Spoke
16.50x5.00 6.12
5.38 9.25 11.25
6
0.78
3771
80
O BEA Disc
15.00x4.00 9.00 5.32
8.78 11.25
10
1.00
3771A 79
O BEA Disc
15.00x4.00 9.00 5.32
8.75 11.25
10
0.81
3771AX 79
O BEA Disc
15.00x4.00 9.00 5.32
8.75 11.25
10
0.81
3772
108
O BEA Disc
16.50x6.00 9.65 6.74
8.78 11.25
10
1.00
3773
111
O BEA Disc
16.50x7.00 10.53 7.72
8.78 11.25
10
1.00
3774
84
O BEA Disc
15.00x5.00 9.33 5.42
8.78 11.25
10
1.25
3774A 84
O BEA Disc
15.00x5.00 9.33 5.42 9.00 10.82
8
1.00
3774AX 84
O BEA Disc
15.00x5.00 9.33 5.42 9.00 10.82
8
1.00
3780
127
O BDA Disc
16.50x8.62
11.30 9.12
8.78 11.25
10
1.00
3780A 127
O BDA Disc
16.50x8.62
11.30 9.12
8.78 11.25
10
1.00 With brake surface wear
indicator.
3780AX 127
O BDA Disc
16.50x8.62
11.30 9.12
8.78 11.25
10
1.00 With brake surface wear
indicator.
3780X 127
O BDA Disc
16.50x8.62
11.30 9.12
8.78 11.25
10
1.00
3784
102
I
AFA Spoke
16.50x7.00 8.40 7.56 9.44
11.00
5
0.78
3784
102
I
AFA Spoke
16.50x7.00 8.40 7.56 9.44
11.00
6
0.65
3784X 102
I
AFA Spoke
16.50x7.00 8.40 7.56 9.44
11.00
5
0.78
3784X 102
I
AFA Spoke
16.50x7.00 8.40 7.56 9.44
11.00
6
0.65
3786
131
O BDF
Disc
16.50x6.00 9.88 6.78 9.00 11.25
10
1.25
3795
115
O BBA Disc
16.50x7.00 10.81
8.28 8.78 11.25
10
1.00
3795X 115
O BBA Disc
16.50x7.00 10.81
8.28 8.78 11.25
10
1.00
3796 107
O BDA Disc
16.50x7.00 10.12 7.50 8.78 11.25
10
1.00
3796A 107
O BDA Disc
16.50x7.00 10.12 7.50 8.78 11.25
10
1.25
3796AX 107
O BDA Disc
16.50x7.00 10.12 7.50 8.78 11.25
10
1.25
3798
115
I
AFA Spoke
16.50x8.62 10.00 9.12
9.44
11.00
5
0.78
3798
115
I
AFA Spoke
16.50x8.62 10.00 9.12
9.44
11.00
6
0.65
3798X 115
I
AFA Spoke
16.50x8.62 10.00 9.12
9.44
11.00
6
0.65
3798X 115
I
AFA Spoke
16.50x8.62 10.00 9.12
9.44
11.00
5
0.78
3811
157
O BDA Disc
16.50x8.62
11.39 9.08 8.78 11.25
10
1.03
Heavy duty version of
3807.
3818
97
O BDA Disc
16.50x5.00 9.37
5.43 8.78 11.25
10
1.25
Double pilot version of
3578.
3818X
97
O BDA Disc
16.50x5.00 9.37
5.43 8.78 11.25
10
1.25
Double pilot version of
3578X.
3819
110
O BDA Disc
16.50x7.00 10.56 7.60 8.78 11.25
10
1.00
3819X 110
O BDA Disc
16.50x7.00 10.56 7.60 8.78 11.25
10
1.00
3820
96
O BEA Disc
16.50x5.00 9.04 5.38 8.78 11.25
10
1.25
Reduced tolerance
version of 3710.
3820X 96
O BEA Disc
16.50x5.00 9.04 5.38 8.78 11.25
10
1.25
Reduced tolerance
version of 3710X.
3821X
79
O BEA Disc
15.00x4.00 8.79 4.78 8.78 11.25
10
1.25 Stepped pilot version of
3721AX.
3825
112
O BDA Disc
16.50x7.00 10.56 7.60 8.78 11.25
10
1.00 Reduce tolerance version
of 3600A.
3825X 112
O BDA Disc
16.50x7.00 10.56 7.60 8.78 11.25
10
1.00 Reduce tolerance version
of 3600AX.
3826X 97
I
ABG Spoke
16.50x7.00 9.00 7.81
11.25 12.75
6
0.65
3826X 97
I
ABG Spoke
16.50x7.00 9.00 7.81
11.25 12.75
5
0.78
3827
40
I
ADA Spoke
12.25x3.50 5.87
4.12
5.00 6.50
5
0.65 Equivalent to Erie 2757.
3827X 40
I
ADA Spoke
12.25x3.50 5.87
4.12
5.00 6.50
5
0.65
Equivalent to Erie
2757-Balanced.