Humphreys Hitch and Trailer Parts

Serving Pensacola for over 25 Years!
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#13GD-#13HD Torflex® AXLE SPECIFICATIONS

Suspension:

Features an independent suspension cushioned with rubber, providing a smooth, quiet ride with no transfer of road shock from one wheel to the other. (No springs required)

Bolt Pattern Options:

  • 8 on 6 1/2" (5/8" Studs)

Brake Options:

#13GD:
  • 12 1/4" x 3 3/8" Electric
  • 12 1/4" x 3 3/8" Hydraulic (Duo-Servo Standard Optional Uni-Servo) With or without Parking Feature.
  • Hydraulic Disc
  • ABS Equipped options for hydraulic brakes

#13HD:
  • 12 1/4" x 4" Electric
  • 12 1/4" x 4" Hydraulic (Duo-Servo Standard Optional Uni-Servo) With or without Parking Feature.
  • Hydraulic Disc
  • ABS Equipped options for hydraulic brakes

Spindles:

#13GD: 387A Inner and 25580 Outer Bearing.
#13HD: 395S Inner and 387A Outer Bearing.
  • Long

Tubing:

  • 3.88" OD Square

Lubrication:

  • Grease
  • Oil Bath (Standard)
#13 Torflex® Mounting Details
Overhang Restrictions
SPINDLE
HUB TYPE
MINIMUM
MAXIMUM
13GD Single Wheel
Drum
20.22"
34.40"
13HD Single Wheel
Drum/Disc
24.50"
34.40"
13HD Dual Wheel
Drum/Disc
25.12"
35.02"
Full Load Dimensions
Dexter Torflex Axle Full Load Dimensions
Dexter Torflex Axle Full Load Dimensions
Dexter Torflex Axle Full Load Dimensions
H=Center Line of Spindle to top of bracket. B=Top of bracket to ground. C=Top of bracket to top of tire.
D=Center Line of spindle to ground. E=Center Line of spindle to top of tire.
Start Angle
 
45° Down
22.5° Down
10° Down
0°
10° Up
22.5° Up
 
Tire
H
B
C
H
B
C
H
B
C
H
B
C
H
B
C
H
B
C
D
E
LT235/85R16
5.2
19.5
10.2
2.9
17.2
12.5
1.6
15.9
13.8
0.6
14.9
14.8
-0.3
14.0
15.7
-1.3
13.0
16.7
14.3
15.4
215/75R17.5
5.2
19.2
10.1
2.9
16.9
12.4
1.6
15.6
13.7
0.6
14.6
14.7
-0.3
13.7
15.6
-1.3
12.7
16.6
14.0
15.3
235/R17.5
5.2
19.5
10.5
2.9
17.2
12.8
1.6
15.9
14.1
0.6
14.9
15.1
-0.3
14.0
16.0
-1.3
13.0
17.0
14.3
15.7
9R17.5 HC
5.2
20.6
11.9
2.9
18.3
14.2
1.6
17.0
15.5
0.6
16.0
16.5
-0.3
15.1
17.4
-1.3
14.1
18.4
15.4
17.1
10R17.5 HC
5.2
20.8
12.8
2.9
18.5
15.1
1.6
17.2
16.4
0.6
16.2
17.4
-0.3
15.3
18.3
-1.3
14.3
19.3
15.6
18.0
Start Angle
 
45° Down
 
Tire
H
B
C
D
E
LT238/85R16
5.2
19.5
10.2
14.3
15.4
215/R17.5
5.2
19.2
10.1
14.0
15.3
235/R17.5
5.2
19.5
10.5
14.3
15.7
9R17.5 HC
5.2
20.6
11.9
15.4
17.1
10R17.5 HC
5.2
20.8
12.8
15.6
18.0
 
22.5° Down
 
Tire
H
B
C
D
E
LT235/85R16
2.9
17.2
12.5
14.3
15.4
215/75R17.5
2.9
16.9
12.4
14.0
15.3
235/R17.5
2.9
17.2
12.8
14.3
15.7
9R17.5 HC
2.9
18.3
14.2
15.4
17.1
10R17.5 HC
2.9
18.5
15.1
15.6
18.0
 
10° Down
 
Tire
H
B
C
D
E
LT235/85R16
1.6
15.9
13.8
14.3
15.4
215/75R17.5
1.6
15.6
13.7
14.0
15.3
235/R17.5
1.6
15.9
14.1
14.3
15.7
9R17.5 HC
1.6
17.0
15.5
15.4
17.1
10R17.5 HC
1.6
17.2
16.4
15.6
18.0
 
0°
 
Tire
H
B
C
D
E
LT235/85R16
0.6
14.9
14.8
14.3
15.4
215/75R17.5
0.6
14.6
14.7
14.0
15.3
235/R17.5
0.6
14.9
15.1
14.3
15.7
9R17.5 HC
0.6
16.0
16.5
15.4
17.1
10R17.5 HC
0.6
16.2
17.4
15.6
18.0
 
10° Up
 
Tire
H
B
C
D
E
LT235/85R16
-0.3
14.0
15.7
14.3
15.4
215/75R17.5
-0.3
13.7
15.6
14.0
15.3
235/R17.5
-0.3
14.0
16.0
14.3
15.7
9R17.5 HC
-0.3
15.1
17.4
15.4
17.1
10R17.5 HC
-0.3
15.3
18.3
15.6
18.0
 
22.5° Up
 
Tire
H
B
C
D
E
LT235/85R16
-1.3
13.0
16.7
14.3
15.4
215/75R17.5
-1.3
12.7
16.6
14.0
15.3
235/R17.5
-1.3
13.0
17.0
14.3
15.7
9R175 HC
-1.3
14.1
18.4
15.4
17.1
10R17.5 HC
-1.3
14.3
19.3
15.6
18.0
Articulation Dimensions
Dexter Torflex Start Angle Illustration
No
 Load
Full
Load
Start Angle
Bracket Profile
H
L
H
L
45° Down
High
7.18"
4.24"
5.24"
5.54"
32° Down
High
6.12"
5.09"
3.93"
5.92"
22° Down
High
5.24"
5.54"
2.94"
6.00"
10° Down
High
3.98"
5.91"
1.64"
5.86"
0°
High
2.94"
6.00"
0.64"
5.54"
10° Up
High
1.90"
5.91"
-0.28"
5.06"
22° Up
High
0.64"
5.54"
-1.30"
4.24"
Humphreys Hitch And Trailer Parts

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Humphreys Hitch And Trailer Parts