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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.
    The DI Type coupling is the standard 6 bolt coupling with two hubs and a spacer assembly that can be installed or removed without disturbing the equipment and hubs and without removing the disc packs from the spacer assembly. Custom spacer lengths can be specified for special applications. The coupling has two flex planes (one at each disc pack) so it can accommodate parallel misalignment by the angular misalignment in each disc pack. This configuration will also accommodate axial misalignment within the specified limits.
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Part Number



Length thru Bore

Nominal Torque

Max. Bore (Dimensions ID1/ID2)

69790494879 N/A DI90-6 HUB RSB N/A 90-6 N/A 1.570 in39.88 mm N/A 2100 in·lb N/A 1.68 in43 mm
69790492069 N/A DI110-6 HUB RSB N/A 110-6 N/A 1.97 in50.04 mm N/A 5100 in·lb N/A 2.06 in52 mm
69790492070 N/A DI132-6 HUB RSB N/A 132-6 N/A 2.36 in59.94 mm N/A 9700 in·lb N/A 2.69 in67 mm
69790492071 N/A DI158-6 HUB RSB N/A 158-6 N/A 2.76 in70.1 mm N/A 17700 in·lb N/A 3.13 in80 mm
69790492072 N/A DI185-6 HUB RSB N/A 185-6 N/A 3.150 in80.01 mm N/A 29200 in·lb N/A 3.750 in95 mm
69790492073 N/A DI202-6 HUB RSB N/A 202-6 N/A 3.54 in89.92 mm N/A 40700 in·lb N/A 4.06 in102 mm
69790492074 N/A DI228-6 HUB RSB N/A 228-6 N/A 3.940 in100.08 mm N/A 62000.00 in·lb N/A 4.500 in115.00 mm
69790492075 N/A DI255-6 HUB RSB N/A 255-6 N/A 4.530 in115.06 mm N/A 90300.00 in·lb N/A 4.940 in125 mm
69790492076 N/A DI278-6 HUB RSB N/A 278-6 N/A 4.920 in124.97 mm N/A 125700.00 in·lb N/A 5.500 in140.00 mm
69790492077 N/A DI302-6 HUB RSB N/A 302-6 N/A 5.320 in135.13 mm N/A 177000 in·lb N/A 6.130 in155.00 mm
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