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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
3854AX 156
O BBG Disc
14.50x10.00 12.82 10.75 9.44
11.25
10
1.25
With bell-end
speedometer drilling.
3854R 156
O BBG Disc
14.50x10.00 12.82 10.75 9.44
11.25
10
1.25
Equivalent to Webb
64115U. Rebore
Indicates .040 Undersize
Drum.
3854RX 156
O BBG Disc
14.50x10.00 12.82 10.75 9.44
11.25
10
1.25
Equivalent to Webb
64115U. Rebore
Indicates .040 Undersize
Drum.
3854X 156
O BBG Disc
14.50x10.00 12.82 10.75 9.44
11.25
10
1.25
Equivalent to Webb
64115B - Balanced.
3855
107
O BEC
Disc
14.50x6.00 8.69 6.56 9.44
11.25
10
1.25
Equivalent to Webb
64117.
3855A 107
O BEC
Disc
14.50x6.00 8.69 6.56 9.44
11.25
10
1.25
With bell-end
speedometer drilling.
3855AX 107
O BEC
Disc
14.50x6.00 8.69 6.56 9.44
11.25
10
1.25
With bell-end
speedometer drilling.
3855R 107
O BEC
Disc
14.50x6.00 8.69 6.56 9.44
11.25
10
1.25
Equivalent to Webb
64117U. Rebore Indicates
.040 Undersize Drum.
3855RX 107
O BEC
Disc
14.50x6.00 8.69 6.56 9.44
11.25
10
1.25
Equivalent to Webb
64117U. Rebore Indicates
.040 Undersize Drum.
3855X 107
O BEC
Disc
14.50x6.00 8.69 6.56 9.44
11.25
10
1.25
Equivalent to Webb
64117B - Balanced.
3856 98
O CAA Disc
16.14x6.00 8.39 6.60 14.53 13.19
10
0.91
Equivalent to Webb
64040.
3856R 98
O CAA Disc
16.14x6.00 8.39 6.60 14.53 13.19
10
0.91
Equivalent to Webb
64040U. Rebore
Indicates .040 Undersize
Drum.
3856RX 98
O CAA Disc
16.14x6.00 8.39 6.60 14.53 13.19
10
0.91
Equivalent to Webb
64040U. Rebore
Indicates .040 Undersize
Drum.
3856X 98
O CAA Disc
16.14x6.00 8.39 6.60 14.53 13.19
10
0.91
Equivalent to Webb
64040B - Balanced.
3857
127
O CBG Disc
16.15x8.00 11.82 9.30 14.41
13.19
10
0.91
Equivalent to Webb
64089.
3857R 127
O CBG Disc
16.15x8.00 11.82 9.30 14.41
13.19
10
0.91
Equivalent to Webb
64089U. Rebore
Indicates .040 Undersize
Drum.
3857RX 127
O CBG Disc
16.15x8.00 11.82 9.30 14.41
13.19
10
0.91
Equivalent to Webb
64089U. Rebore
Indicates .040 Undersize
Drum.
3857X 127
O CBG Disc
16.15x8.00 11.82 9.30 14.41
13.19
10
0.91
Equivalent to Webb
64089B - Balanced.
3887X 83
O BAA Disc
12.25x7.50 11.22 10.00 9.00 10.82
8
1.00
3889 123
O BDG Disc
16.50x7.00 10.82 7.70 8.78 11.25
10
1.00
3890 133
O BDA Disc
16.50x8.62
11.46 8.90 8.78 11.25
10
0.94
3891
135
O BBI
Disc
16.50x8.00 11.44
8.37
8.78 11.25
10
0.81
Notched.
3891X 135
O BBI
Disc
16.50x8.00 11.44
8.37
8.78 11.25
10
0.81
Notched.
3892
134
O BBI
Disc
16.50x8.00 11.44
8.37
8.53 11.25
10
0.81
Notched.
3892X 134
O BBI
Disc
16.50x8.00 11.44
8.37
8.53 11.25
10
0.81
Notched.
3893
124
O BDA Disc
16.50x6.00 9.74
6.74
8.53 11.25
10
1.25
3893X 124
O BDA Disc
16.50x6.00 9.74
6.74
8.53 11.25
10
1.25
3894
122
O BEB Disc
16.50x7.00 10.33 7.77
11.06 13.19
10
1.03
3894X 122
O BEB Disc
16.50x7.00 10.33 7.77
11.06 13.19
10
1.03
3895
79
O ADA Disc
15.00x5.00 8.03 5.71
6.25 8.75
6
0.81