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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: Bolt kits are generally INCLUDED when ordering a DI type hub. Unless ordered as a replacement part, bolt kits are generally not ordered as a stand alone item.
Unit of Measure

Specifications

Description 

 N/A 90-6/94-6-HUB BOLT KIT-STD

Hub Style

 N/A Standard

Coupling Size

 N/A 90-6

Coupling Series

 N/A DI-6

Type

 N/A Hub Bolt Kits

Material

 N/A Steel

Application

 N/A Drop In Disc Coupling Design Bolt Kit

Number of Pieces

 N/A 6

Weight

 N/A 0.70 lb

Weight (Complete Coupling w/ Max. Bores)

 N/A 8.00 lb4.00 Kg

Coupling Type

 N/A Gear

Dimensional Data

Width

 N/A 12.000 in

Height

 N/A 9.000 in

Depth

 N/A 1.00 in

Cubic inches

 N/A 108.00000 in³

Dimensional Data of Related Coupling

Overall Length

 N/A 6.25 in159.00 mm

Max. Bore (Dimensions ID1/ID2)

 N/A 1.68 in43 mm

Length thru Bore

 N/A 1.570 in39.88 mm

Dimension HD

 N/A 2.360 in60.00 mm

Dimension FD

 N/A 3.7 in94.00 mm

Distance between Shaft Ends (Dimension BSE)

 N/A 3.110 in79.00 mm

Dimension S

 N/A 1.270 in32.00 mm

Performance Data of Related Coupling

Max. Speed (Unbalanced)

 N/A 9100 rpm

Max. Speed (Balanced)

 N/A 22700 rpm

Nominal Torque

 N/A 2100 in·lb240 N·m

Max. Torque

 N/A 4200 in·lb480 N·m

Axial Misalignment (∆ Ka)

 N/A 0.059 in1.50 mm

Max. Angular Misalignment

 N/A 1.50 º

Torsional Stiffness x 106

 N/A 2.40 in·lb/rad0.30 Nm/rad

Rated Power at 100 rpm

 N/A 3.50 hp2.60 kW

Features

Features 

 N/A
  • Designed to meet the API 610 Standard
  • Support for additional API requirements available on request
  • Unitized disc pack
  • Infinite life if properly aligned
  • Torsionally rigid without any back lash
  • No need for lubrication or maintenance
  • No wearing parts and high resistance to harsh environmental conditions
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