012-052-00

1

2-3/8"

1-3/4"

0.5
0.5

012-055-01

1

2-3/8"

1-3/4"

0.52

012-003-00

1

2-3/8"

1-3/4"

0.56

012-004-00

1

2-3/8"

2"

0.56

012-001-02

1

3"

1-3/4"

0.56

012-001-03

2

3"

1-3/4"

0.56

012-002-03

1

3"

2"

0.56

012-002-04

2

3"

2"

0.56

012-050-00

1

3"

1-3/4"

0.5

012-037-02

1

3-1/2"

2"

0.62

012-037-04

1

3-1/2"

2"

0.62

012-084-04

1

3-1/2"

1-3/4"

0.62

012-054-00

1

3-1/2"

3"

0.81

012-065-00

1

3-1/2"

2"

0.88

Marine Grade Coating may also be available.
114 | 2020.05

LIGHT DUTY CATALOG

600-8,000 LBS. AXLE CAPACITY

The following instructions describe methods that can be used to attach your Torflex® axles to the vehicle frame.

Step 1: The user must first decide where to place the axle(s) on the trailer. The position of the wheel center relative to the CG (center
of gravity) will determine the final axle loading as well as the hitch load.
Step 2: Determine the method of attachment you wish to use. a. For structural tube type frame rails, refer to Figure 1 for the
recommended attachment. b. For “C” channel or “I” beam type frame, refer to Figure 2.

ADDITIONAL
INFORMATION

Torflex® Installation

Step 3: Once the method of attachment is decided, the axle(s) must be carefully aligned on the trailer frame. The axle(s) centerline
must be perpendicular to the longitudinal centerline of the trailer. See figure 3.
CAUTION: Misalignment of the axle(s) can cause poor tracking and accelerated tire wear.

Attachment to Structural Tube Type Frame
a. Dexter recommends the use of side mounting hangers when mounting axles to tubular type frames. These hangers provide a
convenient means for bolting the axles in place. All of the necessary components are included in the Side Mount A/P Kits listed in
Chart 1.
b. Refer to Chart 2 to find the mounting bracket dimensions of your axles. This chart shows the dimensions from the wheel center to
the bolt holes of the brackets.
c. The preferred way to use the side mount hanger is to pre‑assemble the hangers to the axle using the hardware provided in the A/P
kit. Make sure the hangers are clamped firmly against the axle brackets and the bolts are tightened to the torque specifications
shown in Chart 1. Position the axle assembly on the frame rails in the desired location and weld the side mount hangers to the
frame.
d. Axle bracket position is the distance as measured over the outboard edges of the brackets. This dimension is usually matched to
the outside measurement of the frame members but depending on the type of frame may not always be suitable. The preferred
arrangement should place the longest vertical section of the axle bracket directly under the most rigid section of the frame
member.
Side Mount Installation

OUTSIDE FRAME

OUTSIDE BRACKET DIMENSION

Washer(s) must be placed against the
slotted hole in the axle bracket.
NOTE: Low profile brackets have plain
round holes.

Figure 1

Side mount hangers should be welded to frame with three (3) ¹⁄₄" fillet welds, 2¹⁄₂" long on each side of the hanger and a fillet weld on each end.
Welds should meet the quality standards of the American Welding Society, D1.1, Structural Welding Code.

LIGHT DUTY CATALOG
600-8,000 LBS. AXLE CAPACITY

2020.05 | 115

ADDITIONAL
INFORMATION

Torflex® Installation
Chart 1
Attaching Parts Kits and Torque Specifications
Axle Size

A/P Kit Top
Mount

A/P Kit Side
Mount

A/P Kit Side Mount
Aluminum

Bolt Size

Torque
Lb-Ft.

lbs. 8

A/P-161-00

A/P-165-00

A/P-180-00

1/2"

lbs. 9

A/P-161-00

A/P-165-00

A/P-180-00

1/2"

70-90
70-90

lbs. 10

A/P-148-00

A/P-166-00

A/P-181-00

5/8"

120-155

lbs. 10L

A/P-148-00

A/P-166-00

A/P-181-00

5/8"

120-155

lbs. 10F

A/P-148-00

A/P-166-00

A/P-181-00

5/8"

120-155

lbs. 11

A/P-148-00

A/P-167-00

A/P-182-00

5/8"

120-155

lbs. 12

A/P-148-00

A/P-168-00

A/P-183-00

5/8"

120-155

lbs. 12T

A/P-148-00

A/P-169-00

N/A

5/8"

120-155

lbs. 12V

A/P-148-00

A/P-168-00

N/A

5/8"

120-155

lbs. 13

A/P-148-00

A/P-169-00

N/A

5/8"

120-155

lbs. 13T

A/P-148-00

A/P-169-00

N/A

5/8"

120-155

Side mount hangers and fasteners for mounting axle are provided in the A/P Attaching Parts Kits shown in Chart 1. Torque fasteners to levels
specified in Chart 1.
Attachment to Structural Tube Type Frame
a. Refer to Chart 2 to find the mounting bracket dimensions of your axles. This chart shows the dimensions from the wheel center to
the bolt holes of the brackets.
b. Lay out the bolt hole locations on the bottom flanges of the frame rails. Make sure the hole pattern matches the mounting
brackets of your axles and is properly oriented to allow proper alignment of the axle(s).
c. An alternate method for determining hole location is to position the axle assembly on the frame rails, align it perpendicular to the
trailer centerline, clamp in place and transfer the holes directly from the brackets.
d. Drill the holes through the frame rails and attach the axle using the hardware provided in the A/P kit. Tighten the bolts to the
torque specified in Chart 1.
CAUTION: When bolting to structural shapes that have tapered flanges, bevel washers must be used to prevent uneven clamping and bending of the
fasteners.
Note: In the unlikely event a Torflex® axle must be replaced during the warranty period, Dexter cannot assume responsibility for additional costs
incurred for removal and reinstallation of axles that have been welded directly to the frame.
Top Mount Installation

“C” channel frames should be
reinforced in the area over the axle(s).
Use bevel washers when
bolting to structural steel.

Figure 2

CAUTION: “C” channel and “I” beam type frame sections should be reinforced in the area over the axle mounting brackets. It is recommended that
the vertical leg of the axle bracket be positioned directly under the vertical segment or reinforcement of the frame member.

116 | 2020.05

LIGHT DUTY CATALOG

600-8,000 LBS. AXLE CAPACITY

ADDITIONAL
INFORMATION

Torflex® Installation
Chart 2
Bracket Dimensions
“E” Side Holes

“D” Top Holes

Fender Clearance: allow 3" over the tire at full
load.

“X”

Start Angle of Trailing Arm Mounting Hole to Wheel Center - Dimension "X" (Inches)
45° Down
Torflex® Axle
Model

32° Down

22.5° Down

No
Load

Full
Load

No
Load

Full
Load

No
Load

lbs. 8 (4" arm)

5.21

6.08

5.77

6.33

lbs. 9 (6" arm)

6.62

7.92

7.47

8.30

lbs. 10 (6" arm)

6.74

8.04

7.59

lbs. 10L (6" arm)

6.74

8.04

lbs. 10F (6" arm)

6.74

lbs. 11 (6" arm)

10° Down

0°

10° Up

22.5° Up

Mounting Hole
Spacing (Inches)

Full
Load

No
Load

Full
Load

No
Load

Full
Load

No
Load

Full
Load

No
Load

Full
Load

6.08

6.38

6.32

6.29

6.38

6.08

6.32

5.75

6.08

5.21

7.75

8.00

7.92

8.38

8.29

8.24

8.38

7.92

8.29

7.44

7.92

6.62

7.75

8.00

8.42

8.04

8.50

8.41

8.36

8.50

8.04

8.41

7.56

8.04

6.74

8.00

8.00

7.59

8.42

8.04

8.50

8.41

8.36

8.50

8.04

8.41

7.56