LOOSE AXLES
SPECIFICATION GUIDE
LIT NO: H722
DATE: November 2018

REVISION: H

FOR OFFICE USE ONLY
SPEC NO:

LOOSE AXLES SPECIFICATION GUIDE
Call Hendrickson at:

3

BENT TUBE AXLE SPACING AND ORIENTATION

Rear Down (Standard) S–Cam Angle:
0º
10 º
15 º
22.5º
9.5" ACC or greater is required. Must receive Hendrickson approval for anything less.

LiftAxleTech@hendrickson-intl.com

For additional information and application specifications, call
1.800.660.2829 in the U.S. or 1.800.668.5360 in Canada.

HUMP INSTALLATION ORIENTATION:

1.740.929.5601

Front Up
16.0" ACC or greater is required. Must receive Hendrickson approval for anything less.

SPECIFICATION REQUESTER – REQUIRED INFORMATION

Company Name:

Request Date:

Contact Person:

City, State, Zip:

Telephone:

E-mail Address:

HUMP DOWN/REAR DOWN

Yes
1

HAUX's Axle Orientation Convention for
Front Up Part Number Configuration

Air Chamber
Centers

Air Chamber
Centers

Enter Spicer–Dana® or Hendrickson model number and proceed to application below:

LOOSE AXLE APPLICATION & CAPACITY SELECTION

SPINDLE TYPE:

D22–HN

P22–HP

AXLE STYLE:

Straight

Bent (See page 3 for drawing)

AXLE DIAMETER:

5" OD

5.75" OD

AXLE WALL:
1

MAXIMUM LOAD CAPACITY :
2

TRACK LENGTH :
2

HUMP DOWN/FRONT UP

HAUX's Axle Orientation Convention for
Rear Down Part Number Configuration

Is this a "same–as" purchase to replace a previously purchased model?

25 º

K22

K30

S22

S30

A45

A65

HAUX picks best
Vertical

6" OD

1/2" (Mechanical Springs Only)

5/8"

3/4"

16K

20K

23K

25K

30K

71.5"

77.5"

Other

45K

No (Size:

)

Yes

65K
(See image at bottom of this page.)

Port towards axle (Standard)

BRAKE CHAMBER SIZE:

Type 24

BRAKE SLACK ADJUSTER3:

No (Size:

ABS SENSOR:

No

Yes (ABS Sensor Bracket will be included regardless of selection.)

CAM COVER:

No

Yes

BRAKES:

No (Size:

S-CAM:

No

Type 30

Yes, If yes;
Length:
PAINT:

No
4

)

)

Type 30/30

Other:

Yes

5.5"

Yes

6.0"

!

Hump angle7 not to exceed
+/–150 from centerline at ride
height conditions, i.e. not lifted
or fully extended.

Air Chamber Bracket

!

S–Cam Position Angle
Hump

Port away from axle

Hump angle7 not to exceed
+/–150 from centerline at ride
height conditions, i.e. not lifted
or fully extended.

Hump

Air Chamber
Bracket
Forward

Forward

Manual

16.5 × 7 (Standard)

S–Cam Center Position

Horizontal C/L

LOOSE AXLE OPTIONS

BRAKE CHAMBER3:

Vertical

S–Cam Center Position

!IMPORTANT! NOT TO BE USED IN THE "HUMP UP" ORIENTATION SHOWN BELOW:

Other

28–spline (Standard)
10–spline;
OR Air Chamber Centers (ACC):
Yes

HUB / DRUMS :

No (provide vendor part #):

WHEEL MATERIAL

Steel

Aluminum

HUB MATERIAL

Yes (Hub pilot and long studs, standard)5

Vertical
Vertical

Iron

Aluminum

6

LUBRICATION :

No

80/90 Oil (Standard)

DUST SHIELD:

No

Yes (Available only for 16.5" brake size)

4–PIECE SPINDLE NUT KIT:

No

Yes (Automatically included only if Hub/Drums are selected.)

L2 Grease

Forward

IMPORTANT! ALL ENGAGING CAMS MUST ROTATE THE SAME AS THE WHEELS IN FORWARD MOTION; OPPOSITE CAM
ROTATION CAUSES COMPONENT FAILURE. HUMPS MUST BE WITHIN 15 DEGREES OF VERTICAL AS SHOWN ABOVE, AND
OPERATED AT THE SPECIFIED RIDE HEIGHT. ANY APPLICATION OTHER THAN STATED ABOVE WILL VOID THE WARRANTY.

Track Length Definition Diagram: Dual Tire Centers

2

Forward

H722 Rev H

H722 Rev H

3

Explanations to the notes on page 2 and 3:
Note1
Follows standard axle, spindle, and brake offerings.
2
Note
Track lengths are centers of dual steel wheel tires available in 1/2" increments. For aluminum wheels

subtract 1" from track length:

Note3
Note4
Note5
Note6
Note7

Size is set by standard (note1). Brake chambers must be accompanied by slacks.
Knowing the hub and drum for the axles helps Hendrickson locate the brakes on the axle. This information is required.
Typical stud bolt circle: D22 and P22 = 11–1/4"; A45 and A65 = 13–3/16". Please inquire for other
pilot, stud length and bolt circle choices. Standard is outboard, cast drum.
All hub lubrication unless otherwise specified will be 80/90W oil, except for A65; A65 will have L2
grease.
Hump angle not to exceed +/–150 from centerline at ride height conditions, i.e. not lifted or fully
extended.

Call Hendrickson at 800.660.2829 or 800.668.5360 in Canada for additional information.

www.hendrickson-intl.com

SPECIALTY PRODUCTS AUXILIARY AXLE SYSTEMS
277 North High Street
Hebron, OH 43025 USA
800.660.2829
740.929.5600 • Fax 740.929.5601

Hendrickson Canada
250 Chrysler Drive, Unit #3
Brampton, ON Canada L6S 6B6
800.668.5360
905.789.1030 • Fax 905.789.1033

H722 Rev H 11/2018
Information contained in this literature was accurate at the time of publication. Product changes may have been made after the copyright date that are not reflected.

© 2018 Hendrickson USA, L.L.C. All Rights Reserved

Printed in United States of America