Designed to Test The Running Qualities Of Straight Bevel, Zerol Bevel, Spiral Bevel, And Hypoid Gears Whose Shafts Intersect At 90 Degrees. SPINDLE RUNOUT: Drive Spindle Bore: .00015 Drive Spindle Face: .00015 Driven Spindle Bore: .0002 Driven Spindle Face: .0002 SPECIFICATIONS: Diameter of Gear: 20" Max. Offset Of Gear Spdl. Above Or Below Center Of Pinion Spdl.: 3-1/2" Max. Dis. From Center Of Gear Spdl. To Nose Of Pinion Spdl.: 12" Max, 6" Min. Dis. From Center Of Pinion Spdl. To Nose Of Gear Spdl.: 7-3/4" Max, 4 1/8" Min. Diameter Of Gear: 20" Max. Speed Of Drive Spdl.: 1200 RPM Motor Required: 5 HP Floor Space: 60" x 73" Net Weight: 5,300 lbs