Base Bracket (without Rubber Ring) and Rubber Ring
Specifications
Base Bracket (without Rubber Ring)
Model A
in. (mm)		 B
in. (mm)		 C
in. (mm)		 D
(Dia.)
in. (mm)		 E
in. (mm)		 F
in. (mm)		 G
in. (mm)		 H
in. (mm)		 L
(Dia.)
in. (mm)		 Wt.
lbs. (kg)
BB-47

10.24
(260)

 7.87
(200)		 3.94
(100)		 4.72
(120)		 2.95
(75)		 1.38
(35)		 8.86
(225)		 3.94
(100)		 .67
(17)		 5.1
(2.3)
BB-53

10.63
(270)

 7.09
(180)		 3.94
(100)		 5.31
(135)		 3.15
(80)		 1.57
(40)		 9.84
(250)		 4.84
(123)		 .67
(17)		 5.3
(2.4)
BB-67

10.24
(260)

 7.88
(200)		 3.94
(100)		 6.69
(170)		 2.95
(75)		 1.38
(35)		 8.86
(225)		 4.84
(123)		 .67
(17)		 4.5
(2.0)
BB-69

10.20
(259)

 7.80
(198)		 3.90
(99)		 6.69
(170)		 2.70
(75)		 1.00
(25)		 9.00
(228)		 5.10
(129)		 .75
(19)		 4.6
(2.1)
BB-75

12.99
(330)

 8.66
(220)		 7.87
(200)		 7.48
(190)		 5.51
(140)		 2.36
(60)		 13.39
(340)		 6.69
(170)		 .87
(22)		 12.3
(5.6)
BB-83

15.35
(390)

 10.63
(270)		 9.45
(240)		 8.31
(211)		 7.09
(180)		 2.36
(60)		 15.35
(390)		 7.68
(195)		 .87
(22)		 16.9
(7.7)
 
Rubber Ring
Model A
in. (mm)		 B
in. (mm)		 C
in. (mm)		 D
(Dia.)
in. (mm)		 E
in. (mm)

F
in. (mm)

 Use with Base
Bracket No.
RR-425 5.91
(150)		 4.72
(120)		 4.69
(119)

4.25
(108)

.79
(20)

 .59
(15)		 BB-47
RR-625 7.87
(200)		 6.69
(170)		 6.65
(169)		 6.26
(159)		 .79
(20)		 .59
(15)		 BB-53, -67, -69
RR-787 9.84
(250)		 8.66
(220)		 8.27
(210)		 7.87
(200)		 .98
(25)		 .79
(20)		 BB-75, -83