Our Grid Coupling inventory is located on our Cleveland, OH facility.

We stock hub sizes 1020T – 1160T in a combination of rough stock bore and finished bore.

Hub sizes 1020T – 1080T are available in rough stock bore as well as popular finished bore sizes. Hub sizes 1090T and larger are only stocked in rough stock bore.

Drive Components’ stock covers a wide range of industries and applications.

The 1020T, our smallest Grid Coupling, has a max bore of 1.125” and a torque rating of 460 lbs-in

The 1160T is our largest stock Grid Coupling. It has a max bore of 9.45” and is rated for 494,756 lbs-in torque.

Our Grid Couplings are fully interchangeable with industry standard products.

Drive Components offers rebore capabilities to fit all your shaft size requirements. We can accommodate clearance fit, interference fit and spline bores.

Horizontal Covers (T10) and Vertical Covers (T20) are stock in sizes 1020T – 1120T. For sizes 1130T and larger, we are stocking only Horizontal Covers (T10).


In addition to our coupling stock, we have the capability to produce Grid Couplings up to size 1240T which can accommodate a 18.625” bore and a torque ratings over 4.9 million lbs-in.

Full Spacer (T31), Half Spacer (T35) and Floating Shaft (T50) Grid type coupling are also available.

Click Here to Download the Grid Couplings Brochure


Requirements are wrenches, a straight edge and feeler gauges to install Grid Couplings. Grid Coupling size from 1020 to 1090 are furnished for a clearance fit with a setscrew over the keyway. Larger sizes (from 1100 and up) are furnished for an interference fit without a setscrew.

Clearance Fit Hubs: Clean all parts using a non-flammable solvent. Check hubs, shafts and key ways for burrs. Install keys. Mount hubs with the flange face flush with shaft ends (or as otherwise specified). Tighten setscrews. Do not heat clearance fit hubs.
Interference Fit Hubs: Furnished without setscrews.

1) Mount Seals and Hubs

Lock out starting switch of prime mover. Clean metal parts using a non-flammable solvent. Lightly coat seals with grease and place on shafts before mounting hubs. Heat interference fit hubs. Seal keyways to prevent leakage. Mount hubs on their corresponding shafts so that the hub face is flush with the end of the shaft (unless otherwise indicated).

2) Gap and Alignment

Use a spacer bar equal in thickness to the gap between shafts. Insert bar and same depth at 90° intervals and measure clearance between bar and hub face with feelers. The difference in minimum and maximum measurements must not exceed the angular installation limits.

3) Offset Alignment

Align a straight edge so that it rests squarely on both hubs as shown in the diagram. Check with feelers. The clearance must not exceed the parallel offset installation limits. Tighten all foundation bolts and repeat Steps 2 and 3. Realign coupling if necessary.

4) Insert Grid

Pack the gap and grooves with specified lubricant before inserting grid. When grids are furnished in two or more segments, install them so that all cut ends extend in the same direction. This will assure correct contact between the grid and any non-rotating pins in each half of the covers. Spread the grid just enough so that it passes over the coupling teeth. Seat with a soft mallet.

5) Pack

Pack any spaces between and around the grid with as much lubricant as possible. Wipe off any excess so that any remaining lubricant is flush with top of grid. Position hub seals to line up with the grooves in the cover. Position gaskets on lower cover half flange and assemble the two covers so that the match marks are on the same side. If shafts are not horizontally level, or if the coupling is to be used vertically, assemble cover halves with the lug so that the match marks are up or are on the high side. Push gaskets in against the seals as far as possible. Secure cover halves with fasteners and tighten to torque. Make sure gaskets stay in position while the fasteners are tightened.

Annual Maintenance

Items to perform annually:

  1. Check alignment. If the maximum operating misalignment limits are exceeded, realign the coupling to the recommended installation limits.
  2. Check that all fasteners are tightened to torque.
  3. Inspect Oil Seal and Gasket to determine if replacement is required. Replace if the Seal and Gasket is leaking grease.
  4. Disassemble the coupling and inspect for war. Replace any worn parts. Clean grease from coupling and repack with new grease. Install coupling using a new gasket as instructed in this manual.

Alignment Data

Accurate alignment results in the maximum life and minimum maintenance for the coupling and the connected machinery. The amount of time for a coupling to reach its maximum operating limits is a function of load, operating speed, and lubrication. Maximum operating values listed in the table below are based on the allowable RPM listed on the catalogue. Values listed are based on the use of the specified gaps, use of standard coupling components, standard assemblies, and catalogue allowable speeds. Values may be combined for an installation or operating condition. Parallel misalignment is the distance between the centers of each shaft. Angular misalignment is dimension X minus dimension Y as shown in the drawing below. End float is the axial movement of the hubs within the covers as measured from “0” gap. This measure assumes zero angular and zero parallel misalignment.

Taper Grid Coupling Types Available

T10 Type
T10 Type (Large)
T20 Type
T31 Type (Full Spacer)
T35 Type (Half Spacer)
T50 Type (Spacer)
T63 Type
KBW Type
T10 & G82 Type (Floating Shaft)