The DI Type coupling has a “Drop-In” spacer assembly that is assembled at the factory. The coupling consists of two hubs and a spacer assembly comprising of the spacer, two unitized disc packs, and two guard rings. The disc packs are bolted to the spacer and guard rings at the factory using the torque values recommended by Lovejoy for the disc pack bolts. With the hubs mounted on the shafts, the entire disc pack assembly can be “Dropped In” place between the two hubs. The hubs are piloted to ensure proper centering of the spacer assembly. This piloting serves as an anti-flail feature and aids in the coupling’s ability to meet the balance standards mandated by API. This style coupling is designed to meet the balance and anti-flail requirements specified in API-610.

    Oversized, or Jumbo, hubs are available for use with the DI Type coupling to allow for larger bore sizes on most DI coupling sizes. This allows for the use of smaller DI couplings in applications where a smaller size coupling can still accommodate the application torque.
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Item #



Hub Style

Length thru Bore (Dimensions LTB1/LTB2)

Dimension FD

Overall Length

Nominal Torque

N/A DI90-6 CPLG RSB X RSB BSE=3.5" N/A 90-6 N/A Standard N/A 1.570 in39.88 mm N/A 3.700 in94.00 mm N/A 6.640 in159.00 mm N/A 2100 in·lb
N/A DI132-6 CPLG RSB X RSB BSE=7" N/A 132-6 N/A Standard N/A 2.36 in59.94 mm N/A 5.47 in139 mm N/A 11.72 in231 mm N/A 9700 in·lb
N/A DI158-6 CPLG RSB X RSB BSE=7" N/A 158-6 N/A Standard N/A 2.76 in70.1 mm N/A 6.5 in165 mm N/A 12.52 in280 mm N/A 17700 in·lb
N/A DI185-6 CPLG RSB X RSB BSE=7" N/A 185-6 N/A Standard N/A 3.150 in80.01 mm N/A 7.600 in193.00 mm N/A 13.900 in320.00 mm N/A 29200 in·lb
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