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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 DI158-6-GUARD RING

Type

 N/A Disc

Style

 N/A Guard Rings

Color

 N/A Metallic

Coupling Series

 N/A DI-6

Weight

 N/A 4.54 lb

Weight (Complete Coupling w/ Max. Bores)

 N/A 40.00 lb18.00 Kg

Dimensional Data

Height

 N/A 6.5 in

Depth

 N/A 1.438 in

Width

 N/A 6.500 in

Cubic inches

 N/A 60.75550 in³

Dimensional Data of Related Coupling

Coupling Size

 N/A 158-6

Length thru Bore

 N/A 2.76 in70.1 mm

Outside Diameter

 N/A 4.410 in112.00 mm

Overall Length

 N/A 11.02 in280 mm

Max. Bore (Dimensions ID)

 N/A 3.13 in80 mm

Flange Diameter (Dimension FD)

 N/A 6.5 in165.00 mm

Dimension PW

 N/A 1.438 in36.53 mm

Dimension S

 N/A 3.120 in79.00 mm

Distance between Shaft Ends (Dimension BSE)

 N/A 5.5 in140.00 mm

Performance Data of Related Coupling

Temperature 

 N/A -40 to 450 ºF

Nominal Torque

 N/A 17700 in·lb2000 N·m

Max. Torque

 N/A 35400 in·lb4000 N·m

Max. Speed (Unbalanced)

 N/A 4920 rpm

Max. Speed (Balanced)

 N/A 12300 rpm

Axial Misalignment (∆ Ka)

 N/A 0.122 in3.1 mm

Max. Angular Misalignment

 N/A 1.50 º

Torsional Stiffness x 106

 N/A 5.8 in·lb/rad0.70 Nm/rad

Rated Power at 100 rpm

 N/A 28.2 hp21 kW
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