To determine the interchange, select your Grove model number from the drop down boxes.

Series:	--Select-- GR - Ironman Cast Iron Reducer NH - Ironman Narrow Housing Cast Iron EL - Electra Gear Aluminum GRG - Grove Gear Flexaline GRL - Leeson Ironman SS - Stainless Steel
Washdown Option:	--Select-- Blank - Std Unit W
Input Shaft Style:	--Select-- B - Solid Shaft - Reducer BM - Solid Shaft - Motorized With Coupling BMQ - Solid Shaft - Motorized Quill C - C Flange Mount Solid Shaft Reducer CM - C Flange Mount Solid Shaft Motorized With Coupling CMQ - C Flange Mount Solid Shaft Motorized Quill F - Flange Mount Solid Shaft Reducer FM - Flange Mount Solid Shaft Motorized With Coupling FMQ - Flange Mount Solid Shaft Motorized Quill FHMQ - Flange Mount Hollow Shaft Motorized Quill FHM - Flange Mount Hollow Shaft Motorized With Coupling FH - Flange Mount Hollow Shaft Reducer H - Hollow Bore Non-Flanged HM - Hollow Bore Motorized Flexible Coupling HMQ - Hollow Bore Motorized Quill Input T - Horizontal Base Solid Shaft Reducer Worm Over TM - Horizontal Base Solid Shaft Motorized With Coupling Worm Over TMQ - Horizontal Base Hollow Shaft Motorized Quill Worm Over TH - Horizontal Base Hollow Shaft Reducer Worm Over THM - Horizontal Base Hollow Shaft Motorized with Coupling Worm Over THMQ - Horizontal Base Hollow shaft Motorized Quill Worm Over U - Horizontal Base Solid Shaft Reducer Worm Under UM - Horizontal Base Solid Shaft Motorized with Coupling Worm Under UMQ - Horizontal Base Hollow Shaft Motorized Quill Worm Under UH - Horizontal Base Hollow Shaft Reducer Worm Under UHM - Horizontal Base Hollow Shaft Motorized With Coupling Worm Under UHMQ - Horizontal Base Hollow shaft Motorized Quill Worm Under VH - Vertical Output High Solid Shaft Reducer VHM - Vertical Output High Solid Shaft Motorized With Coupling VHMQ - Vertical Output High Solid Shaft Motorized Quill VHH - Vertical Output High Hollow Shaft Reducer VHHM - Vertical Output High Hollow Shaft Motorized With Coupling VHHMQ - Vertical Output High Hollow Shaft Motorized Quill VL - Vertical Output Low Solid Shaft Reducer VLM - Vertical Output Low Solid Shaft Motorized With Coupling VLMQ - Vertical Output Low Solid Shaft Motorized Quill VLH - Vertical Output Low Hollow Shaft Reducer VLHM - Vertical Output Low Hollow Shaft Motorized with Coupling VLHMQ - Vertical Output Low Hollow Shaft Motorized Quill
Size:	--Select-- 813 - 1.33" CD 815 - 1.54" CD 818 - 1.75" CD 821 - 2.06" CD 824 - 2.38" CD 826 - 2.62" CD 830 - 3.00" CD 832 - 3.25" CD 842 - 4.25" CD 852 - 5.25" CD 860 - 6.00" CD 870 - 7.00" CD 880 - 8.00" CD 8100 - 10.00" CD
Ratio:	--Select-- 05 - 5:1 07 - 7.5:1 10 - 10:1 15 - 15:1 20 - 20:1 25 - 25:1 30 - 30:1 40 - 40:1 50 - 50:1 60 - 60:1 70 - 70:1 80 - 80:1 100 - 100:1
Output Shaft:	--Select-- L - Single Extended Left R - Single Extended Right D - Solid Shaft DBL Ext H - Hollow H1 - Hollow H2 - Hollow HR - Hollow Shaft Right Mount HL - Hollow Shaft Left Mount RR - Solid Shaft Right Mount Right LL - Solid Shaft Left Mount Left RL - Solid Shaft Right Mount Left LR - Solid Shaft Left Mount Right LD - Solid Shaft Left Mount Down LU - Solid Shaft Left Mount Up RD - Solid Shaft Right Mount Down RU - Solid Shaft Right Mount Up DD - Solid Shaft DBL Ext Mount Down DU - Solid Shaft DBL Ext Mount Up DL - Solid Shaft DBL Ext Mount Left DR - Solid Shaft DBL Ext Mount Right
Motor Frame:	--Select-- - Non Motorized 48 - 48 CZ 56 - 56C 140 - 143-5TC 180 - 182-4TC 210 - 213-5TC 250 - 254-6TC 63 - D63D B5 71 - D71D B5 80 - D80D B5 90 - D90D B5 110 - D100LD/D112MB B5 132 - D132D
Output Bore:	--Select-- - - Solid Shaft 10 - 5/8" 11 - 11/16" 12 - 3/4" 14 - 7/8" 16 - 1" 18 - 1-1/8" 19 - 1-3/16" 20 - 1-1/4" 23 - 1-7/16" 24 - 1-1/2" 26 - 1-5/8" 27 - 1-11/16" 28 - 1-3/4" 30 - 1-7/8" 31 - 1-15/16" 32 - 2" 35 - 2-3/16" 36 - 2-1/4" 39 - 2-7/16" 40 - 2-1/2" 43 - 2-11/16" 47 - 2-15/16" 48 - 3"
Input Speed:	--Select-- Reducer Unit Input Speed - 1150 Reducer Unit Input Speed - 1750