Heave Compensator

Heave Compensator
Heave Compensator
Product Description

EM90A4 'Shark' - Heave Compensator


Part Number: EM9FA4 / XXCD


12 to 18 m of 2.2 diameter stainless steel cable

Tension maintained via internal spring system


The unit has a built in magnetic brake system to limit the cable speed in case of cable rupture.

See video



Depends on encoder



Technical DataPart Number
Operating temp:- 40 ...+   60 degrees C-EM9FA4 / 10CD - 10m cable
- 40 ...+ 140 degrees F-EM9FA4 / 12CD - 12m cable
Certification:ATEX, IECEx, CSA-EM9FA4 / 15CD - 15m cable
Weight:15 lbs (6.8 kg)-EM9FA4 / 18CD - 18m cable
Protection:IP 54 (structure)
Material Structure:Coated Aluminum

-After the 10CD, 12CD, 15CD or 18CD add first 4 digits of

Tension Springs:Dual springs encoder to be used so we can make the adaptor flange


Material Pulleys:AluminumOutput Options from Encoder
Material Cable:Stainless Steel 2.2mm-Any standard drawworks (NAMFPX) series encoders
Material Encoder:Depends on Model     Incremental 5...24V
Tension on Cable:Between 15 and 20N     Incremental NAMUR
Max Reel Out Accel:25m/s2     Tachometer
Max Reel In Accel:10m/s2-Multi-turn solid shaft encoders
Cable Break Load:3,622 N     Absolute Parallel
Max Static Torque:35N     Absolute ProfiBus
     Absolute DeviceNet
Total Error:+/- 2.2mm


Anti Tangle Mechanism

Brake Mechanism
The cable winds onto a single layer of the drum, ensuring that each revolution has the same linear distance equivalent.  A simple, yet sturdy internal mechanism prevents tangling The unit has a built in magnetic brake system to limit the cable speed in case of cable rupture.  No external air or electrical connections are required.  See video

Installation Manual:

Heave Compensator installation manual


Related Products
right arrow
left arrow
Contact Us

504, Ghanshyam Enclave, Lalji Pada, Kandivali Link Road, Kandivali (West), Mumbai, Maharashtra, 400067, India
Phone :+918037304378