Mechanically synchronised

LDC-D & KLDC-D Double chain hoists

Demag double chain hoist: Two mechanically synchronised chain lead-offs for safely handling bulky loads

Double chain hoists are particularly suitable for handling long material or for operation with load bars. Demag offers solutions with two mechanically synchronised chain lead-offs that can lift and lower bulky loads in perfect balance. The load can also be asymmetrically distributed to meet special application needs.

The right double chain hoist for your application

LDC-D double chain hoists are suitable for higher speeds. The chain hoist can transport loads weighing up to 5,000 kg at 24 m/min. You can choose between a 2-stage or variable-speed control system and can use the chain hoist as a stationary, push or electric-travel unit, for example on our modular Demag KBK light crane system.

KLDC-D double chain hoists offer a short C dimension thanks to their low-headroom. This increases utilisation of the available space and loads weighing up to 2,000 kg can be lifted and lowered at 2-stage or variable speeds. KLDC-D chain hoists can also be operated as stationary units or with push or electric travel.

Durable components for uncompromising cost-efficiency

The components installed in the DC chain hoist range are selected for their longevity. The generously specified gearbox allows for FEM classification up to 4m and, therefore, 6,300 hours of operation for demanding applications.

Product information

The benefits at a glance

LDC-D benefits

Suitable for higher speeds
Longer chain service life thanks to reduced polygon effect since there are no additional chain return sprockets
Load capacities up to 5 t
Hook center distances from 550 mm to 3,200 mm
Lifting speeds up to 24 m/min
Available with 2-stage or variable speeds
Possible variants: stationary, traveling, for operation with KBK and for articulated trolleys
Asymmetric load distribution permitted

KLDC-D benefits

Low C dimension as for low-headroom design for optimum utilization of the available headroom
2/4 lead-off position
Load capacities up to 2 t
Hook center distances from 400 mm to 4,600 mm
Available with 2-stage or variable speeds
Possible variants: stationary, traveling, for operation with KBK and for articulated trolleys
Asymmetric load distribution permitted

Further information

Two chain lead-offs – tandem operation

Two chain hoists can be used in tandem as an alternative to mechanically synchronized double chain hoists for transporting long materials and car bodies, etc.

Parallel control from one control point
Tandem control (not synchronized control) for safe operation as a „group“ according to DIN EN 15011.
Individual chain hoists can be controlled by means of a selector switch.

Further KLDC-lead-off positions

KLDC-D double chain hoist: low-headroom design, 3/4 lead-off position
Alternative lead-off positions depending on the size of the load handling attachments

KLDC-D double chain hoist: low-headroom design, 4/5 lead-off position

KLDC-D double chain hoist: low-headroom design, 4/5 lead-off position
Alternative lead-off positions depending on the size of the load handling attachments

Customer benefits at glance

Safety

Low-voltage control pendant thanks to 24 V contactor control system
Safety-related functions satisfy at least Performance Level c and Category 2 to EN ISO 13849-1

Minimum load sway

Smooth cross-travel starting and braking motions for low-sway load handling
Speeds and acceleration/braking rates can be modified by means of the control pendant, if required

Long service life

Generously specified gearbox. 2m+ (1,900 hours) for main load capacities and up to 4m (6,300 hours) for demanding applications
All sub-assemblies of the chain hoist are rated for a long service life, even under the most demanding conditions

Temperature range

Reliable operation from -20 °C to +45 °C without any reduction in the duty factor
Operation also possible up to 60 °C and more

Ergonomics

Length of control cable or position of control pendant can be adjusted without the need for any wiring
Length of control cable that is not needed can be stored under the service cover

High-performance motor

Hoist motor has large safety reserves to provide for reliable operation for many years
Can be used for switching cycles way beyond usual market levels

Pro-Hub function

Up to 90% higher rated lifting speed in reduced load range

Easy to service

Gearbox & slipping clutch maintenance-free for up to 10 years
Brake maintenance-free for up to 10 years (up to 5 years for DC 10–25)
Simple and rapid maintenance and repair of individual components thanks to the modular chain hoist design – cuts any downtime to a minimum

Variable speeds

Valuable and sensitive parts can be moved and positioned more smoothly and reliably
Variable button characteristic like a car accelerator pedal

Status display

Display for elapsed operating time counter and operating statuses
Always up-to-date for service purposes

Slipping clutch monitoring

Harmful continuous slipping eliminated thanks to speed monitoring
Reliable protection against extreme overload
Load securely held in any operating situation and cannot drop while hoist is at standstill, since brake is arranged in front of the slipping clutch in load-bearing arrangement