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    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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Hub Style

Part Number



Hub Style

Length thru Bore

Nominal Torque

Max. Bore (Dimensions ID1/ID2)

69790494935 N/A DI90-6 JUMBO HUB RSB N/A 90-6 N/A Jumbo N/A 1.570 in39.88 mm N/A 2100 in·lb N/A 2.250 in59.00 mm
69790492087 N/A DI110-6 JUMBO HUB RSB N/A 110-6 N/A Jumbo N/A 1.97 in50.04 mm N/A 5100 in·lb N/A 2.940 in75.00 mm
69790492088 N/A DI132-6 JUMBO HUB RSB N/A 132-6 N/A Jumbo N/A 2.36 in59.94 mm N/A 9700 in·lb N/A 3.560 in90.00 mm
69790492089 N/A DI158-6 JUMBO HUB RSB N/A 158-6 N/A Jumbo N/A 2.76 in70.1 mm N/A 17700 in·lb N/A 4.130 in105.00 mm
69790492090 N/A DI185-6 JUMBO HUB RSB N/A 185-6 N/A Jumbo N/A 3.150 in80.01 mm N/A 29200 in·lb N/A 4.940 in125 mm
69790492091 N/A DI202-6 JUMBO HUB RSB N/A 202-6 N/A Jumbo N/A 3.54 in89.92 mm N/A 40700 in·lb N/A 5.380 in135.00 mm
69790492092 N/A DI228-6 JUMBO HUB RSB N/A 228-6 N/A Jumbo N/A 3.940 in100.08 mm N/A 62000.00 in·lb N/A 5.940 in150 mm
69790492093 N/A DI255-6 JUMBO HUB RSB N/A 255-6 N/A Jumbo N/A 4.530 in115.06 mm N/A 90300.00 in·lb N/A 6.630 in170.00 mm
69790492094 N/A DI278-6 JUMBO HUB RSB N/A 278-6 N/A Jumbo N/A 4.920 in124.97 mm N/A 125700.00 in·lb N/A 7.310 in185.00 mm
69790492095 N/A DI302-6 JUMBO HUB RSB N/A 302-6 N/A Jumbo N/A 5.320 in135.13 mm N/A 177000 in·lb N/A 7.880 in200 mm
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