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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.
    Note: Guard Rings are INCLUDED in a sub-assembly, along with two disc pack kits and a spacer. Unless ordered as a replacement part, guard rings are generally not ordered as a stand alone item.
Unit of Measure

Specifications

Description 

 N/A DI278-6 GUARD RING

Type

 N/A Disc

Style

 N/A Guard Rings

Color

 N/A Metallic

Coupling Series

 N/A DI-6

Weight

 N/A 25.35 lb

Weight (Complete Coupling w/ Max. Bores)

 N/A 223.00 lb101.00 Kg

Dimensional Data

Height

 N/A 11.260 in

Depth

 N/A 2.528 in

Width

 N/A 11.260 in

Cubic inches

 N/A 320.51905 in³

Dimensional Data of Related Coupling

Coupling Size

 N/A 278-6

Length thru Bore

 N/A 4.920 in124.97 mm

Outside Diameter

 N/A 7.680 in195.00 mm

Overall Length

 N/A 19.900 in505.00 mm

Max. Bore (Dimensions ID)

 N/A 5.500 in140.00 mm

Flange Diameter (Dimension FD)

 N/A 11.260 in286.00 mm

Dimension PW

 N/A 2.528 in64.21 mm

Dimension S

 N/A 5.630 in143.00 mm

Distance between Shaft Ends (Dimension BSE)

 N/A 10.060 in256.00 mm

Performance Data of Related Coupling

Temperature 

 N/A -40 to 450 ºF

Nominal Torque

 N/A 125700.00 in·lb14200.00 N·m

Max. Torque

 N/A 251400.00 in·lb28400.00 N·m

Max. Speed (Unbalanced)

 N/A 2800.00 rpm

Max. Speed (Balanced)

 N/A 7000.00 rpm

Axial Misalignment (∆ Ka)

 N/A 0.205 in5.20 mm

Max. Angular Misalignment

 N/A 1.00 º

Torsional Stiffness x 106

 N/A 63.00 in·lb/rad7.10 Nm/rad

Rated Power at 100 rpm

 N/A 199.50 hp148.80 kW
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