570 Slack Reducing Coupling, Part #10004789

When vertical clearance is at a premium, the 10004789 slack reducing coupling may be your solution. Our 10004789 model offers a bottom mount air chamber, low profile, and strong latching system. An oil cup is provided to quickly and easily lubricate the latch. This coupling must be used with an air service chamber. With a maximum gross trailer weight of 90,000 lbs. and 20,000 lbs. latch capacity, this is the perfect product for your heavy-duty applications.



Part #10004789
(Model #570)
Coupling and 10000107 Thimble.
Part #10004790
(Model #570A Kit)
10004789 Coupling, 10000152 Bolt Kit, 10000117 Air Chamber, 10000107 Thimble.


Maximum Gross Trailer Weight 90,000 lbs. (40,823 kg)
Maximum Tongue Weight 18,000 lbs. (8,165 kg)
Ultimate Latch Capacity 20,000 lbs. (9,072 kg)
Maximum Eye X-Section 1 13/16 in. (46 mm)
Minimum Eye Opening 2 3/8 in. (60 mm)
Unit Weight 32.8 lbs. (14.9 kg)
Below are the Compatible Drawbar Eyes, to see the full reference chart click here.

Additional information