Gears
Haley Auxiliary Drive Units
(Download PDF for larger images, spec tables and information)
IHC Series
In-line Hydraulic Clutch. Completely self contained with pumps, lube oil systems, filters and control valves capable of limited slipping. Front engine crank shaft drive for fire pumps or other equipment up to 500hp @ 1800 rpm. (See pages 22-23.)
![]() |
![]() |
ADV Series
Angular Drive Vertical offset gears are special units with angeled output drives. Best for Z-Drive unites which require the drive shaft be in direct line with the output shaft, this eliminates expensive cardigan shafts.
It comes in one of three different hydraulic drive systems, including torsionally resilient couplings and clutches with slip mode.
![]() |
![]() |
V-1200 Series
Vertical offset version of extended shaft unit with pneumatic clutch for mounting directly off the main engine front crank shaft. Suitable for driving hydraulic pumps or other auxiliary drives. Rating up to 300hp.
![]() |
![]() |
V-1500 SAE
Flywheel housing mounted unit complete with pneumatic clutches, input rotor seals, and controls. The units are capable of increasing or decreasing RPM. Excellent for hydraulic drives, fire pump drives generator drive, etc. up to 1500hp.
![]() |
H-1600 Series
Horizontal offset drive for fire pumps, generators, air compressors, large hydraulic systems, etc. Suitable for up to 1600hp. Ratios can be spread increasers or decreasers.
![]() |
![]() |
V-1600 Series
Vertical offset unit that is well suited for driving large fire pumps. Unit has extended shaft to clear front of engine auxiliaries. Capacity up to 1600hp with 1800 pump rpm.
![]() |
![]() |
V-1600 Series SAE
Vertical offset unit with HRC torsional coupling mounting to SAE flywheel. It includes a self-contained pump. It may also come complete with torsionally resilient pneumatic clutch on output shaft for starting and disengaging heavy loads. Unit rates up to 1600hp with heavy mass driven equipment.
![]() |
V-1500 Series
Vertical offset unit with extended shaft.
The torsional coupling and pneumatic clutch are suitable for large hydraulic
systems, fire pumps, generators or compressors. Rates up to 1500 hp.
![]() |












