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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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DI-6 Type Drop-In Center Industrial Coupling Jumbo Hubs - Imperial

Drop-In Center Industrial Coupling Jumbo Hub w/ Rough Stock Bore
DI-6 Type Drop-In Center Industrial Coupling Jumbo Hubs - Imperial

Drop-In Center Industrial Coupling Jumbo Hub w/ Rough Stock Bore
DI-6 Type Drop-In Center Industrial Coupling Jumbo Hubs - Imperial

Drop-In Center Industrial Coupling Jumbo Hub w/ Rough Stock Bore
DI-6 Type Drop-In Center Industrial Coupling Jumbo Hubs - Imperial

Drop-In Center Industrial Coupling Jumbo Hub w/ Rough Stock Bore
DI-6 Type Drop-In Center Industrial Coupling Jumbo Hubs - Imperial

Drop-In Center Industrial Coupling Jumbo Hub w/ Rough Stock Bore
Description  N/A DI90-6-HUB JUMBO-RSB N/A DI110-6-HUB JUMBO-RSB N/A DI132-6-HUB JUMBO-RSB N/A DI158-6-HUB JUMBO-RSB N/A DI185-6-HUB JUMBO-RSB
Size N/A 90-6 N/A 110-6 N/A 132-6 N/A 158-6 N/A 185-6
Hub Style N/A Jumbo
Type N/A Disc Coupling Hubs
Hub Material N/A AISI 1045
Set Screw Style Coupling Size (Dimension T) N/A No Setscrew
Length thru Bore N/A 1.570 in39.88 mm N/A 1.97 in50.04 mm N/A 2.36 in59.94 mm N/A 2.76 in70.1 mm N/A 3.150 in80.01 mm
Style N/A Unbored
Overall Length N/A 6.25 in159.00 mm N/A 8.19 in208 mm N/A 9.100 in231 mm N/A 11.02 in280 mm N/A 12.610 in320.00 mm
Color N/A Metallic
Nominal Torque N/A 2100 in·lb N/A 5100 in·lb N/A 9700 in·lb N/A 17700 in·lb N/A 29200 in·lb
Max. Torque N/A 4200 in·lb N/A 10200 in·lb N/A 19200 in·lb N/A 35400 in·lb N/A 58400 in·lb
Bore Type  N/A Rough Stock Bore
Max. Bore (Dimensions ID1/ID2) N/A 2.250 in59.00 mm N/A 2.940 in75.00 mm N/A 3.560 in90.00 mm N/A 4.130 in105.00 mm N/A 4.940 in125 mm
Max. Speed (Unbalanced) N/A 9100 rpm N/A 7200 rpm N/A 5840 rpm N/A 4920 rpm N/A 4200 rpm
Max. Speed (Balanced) N/A 22700 rpm N/A 18000 rpm N/A 14600 rpm N/A 12300 rpm N/A 10500 rpm
Dimension FD N/A 3.700 in94.00 mm N/A 4.53 in115 mm N/A 5.47 in139 mm N/A 6.5 in165 mm N/A 7.600 in193.00 mm
Dimension S N/A 1.270 in32.00 mm N/A 2.410 in61.00 mm N/A 2.540 in64.00 mm N/A 3.120 in79.00 mm N/A 3.480 in88.00 mm
Distance between Shaft Ends (Dimension BSE) N/A 3.110 in79.00 mm N/A 4.25 in108 mm N/A 4.380 in111.00 mm N/A 5.5 in140.00 mm N/A 6.310 in160.00 mm
Axial Misalignment (∆ Ka) N/A 0.059 in N/A 0.083 in N/A 0.102 in N/A 0.122 in N/A 0.146 in
Max. Angular Misalignment N/A 1.50 º
Torsional Stiffness x 106 N/A 2.40 in·lb/rad N/A 3.4 in·lb/rad N/A 4.4 in·lb/rad N/A 5.8 in·lb/rad N/A 11.50 in·lb/rad
Rated Power at 100 rpm N/A 3.50 hp2.60 kW N/A 8 hp6 kW N/A 15.4 hp11.5 kW N/A 28.2 hp21 kW N/A 46.30 hp34.50 kW
Coupling Series N/A DI-6
Coupling Type N/A Disc
Weight N/A 3.40 lb N/A 8.52 lb N/A 5.70 lb N/A 25.14 lb N/A 14.00 lb
Weight (Complete Coupling w/ Max. Bores) N/A 8.00 lb N/A 12.00 lb N/A 22.00 lb N/A 40.00 lb N/A 62.00 lb
Cubic inches N/A 21.49330 in³ N/A 40.42617 in³ N/A 70.61332 in³ N/A 116.61000 in³ N/A 181.94400 in³