Hawboldt Light-duty Winch

Hawboldt Light-duty Winch

DESCRIPTION: The winch is a portable general-purpose to be used for any type of deployment. The winch frame is designed to fit the UNOLS standard 2’x2’ bolt pattern and has lift points for equal length slings and fork pockets. The HPU is integrated into the winch frame which requires a single point power connection making installation quick and easy. It is a single drum, direct pull type unit driven by a “winch drive” planetary gearbox with integral failsafe brake and bent-axis axial piston hydraulic motor. The failsafe brake is a parking brake only and should not be used for dynamic braking. Dynamic braking is achieved through counterbalance valves, which are connected to the motor via hard lines.

The winch has a hollow stub shaft for the customer supplied slip ring. The cable should connect to the slip-ring inside winch drum where there are a few service loops of cable before it is clamped to a fixing point. The cable then exits through a hole in the drum along the slip-ring side flange, and begins winding around the drum barrel. The barrel of the winch is large to protect the wire rope by reducing the high crushing loads associated with smaller barrel diameters. The larger barrel also enhances spooling performance, as the total number of layers on the winch is reduced. Furthermore, the resulting line pull vs. payout length curve is flattened, as the winch pull at bare drum does not drop off quickly as the layers build up. This is made evident by comparing the ratio of bare drum to full drum line pull.

The winch uses a PLC controlled in-line level wind which has variable speed for spooling cable sizes from 1/4” to 3/8” diameter. The level wind includes a sheave with large curved aluminum cheek plates for passing line hardware up to 4” diameter. The sheave contains sensors for payout and line speed data, as well as a load pin in the axle for tension measurement. An acme screw, driven by a small hydraulic motor, is used to traverse the level wind sheave across the drum. Sensors measuring drum and acme screw rotation are used to control the level wind position and Hawboldt ProSpool spooling system is used to manage the right angle levelwind from the HMI on the control console. Level wind can also be parked through the system for deployments where it is not required to pass cable through sheave.

The winch is controlled from a local console mounted on winch which houses operator devices as well as Hawboldt’s sunlight readable HMI interface. This console gives full control and monitoring of winch and level wind. An optional hard-wired remote belly pack is also supplied that can be connected to the winch. Remote control is limited to winch operation only with limited monitoring (no HMI).

APPLICATIONS: as a general purpose winch, this tool has a wide range of applications from deployment/recovery of instruments to water column sampling.  The drum can accommodate wire cables and soft lines.  With installation of a Nylatron sheave in the levelwind and other preparations, the winch can be used for trace metal sampling.

SPECIFICATIONS: see link to specification sheet below

Links to: 

HLD Specifications (Quick Reference)

HLD General Arrangement Drawing

HLD Maximum Capacity Document (MCD)


HLD, front
HLD, front left


HLD, front right
HLD, Rating
HLD, Levelwind, Nylatron sheave & epoxy cheeks