Iron Brakes | McMaster-Carr

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For Caster Mount Height

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4 13/16"

6 1/2"

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Material

Mounting Hole Center-to-Center Length

Speed Ratio

Screw Size

Output Shaft Diameter

Mounting Location

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DFARS Specialty Metals

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Brake Retraction Pedal Location

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Input Shaft Diameter

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Output Shaft Location

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REACH

64 Products

Floor Locks

Stabilize carts, trucks, workbenches, and other mobile equipment during loading and unloading. Floor locks bolt or weld to the underside of your equipment and have a spring-loaded base with a nonskid floor pad to keep equipment stationary.

Note: Floor locks are not load rated. They are designed to brake your equipment in place, not lift it off the floor.

Brake Retraction Pedal on Both Sides with Pivoting Base


			Mounting Plate Style 1

Pivoting base compensates for uneven floors.

		Ht.			Mounting Plate			Mounting Hole Ctr.-to-Ctr.
	For Caster Mount Ht.	Extended	Retracted	Clearance	Style	Lg.	Wd.	Lg. (A)	Lg. (B)	Wd. (A)	Wd. (B)	Mounting Fasteners Included	For Screw Size	Color		Each
Painted Iron



		5 5/8" to 5 7/8"	5 5/8"	4 9/16"	1 5/16"	1	4 13/16"	4 1/4"	3 5/8"	3"	3"	2 5/8"	No	3/8"	Gray	00000000	0000000


		7 1/4" to 7 1/2"	7 1/2"	6"	1 3/4"	1	6 1/2"	4 3/4"	5 1/4"	4 15/16"	3 3/8"	2 7/16"	No	1/2"	Gray	00000000	000000
		10 1/4" to 10 5/8"	10 1/4"	9 1/8"	1 3/8"	1	6 1/2"	4 3/4"	5 1/4"	4 15/16"	3 3/8"	2 7/16"	No	1/2"	Gray	00000000	000000

Right-Angle Speed Reducers

Reduce shaft speed and increase torque while transmitting motion at a 90° angle. Speed reducers require lubrication (not included). Connect to a motor using a shaft coupling (not included).

With 1 Output Shaft


With Left-Side Output	With Right-Side Output


Reducer with Right-Side Output	Reducer with Left-Side Output

Radial Load Capacity—Radial loads are loads that are perpendicular to the shaft. They’re commonly caused by components attached to shaft, such as pulleys and sprockets.

Mounts—Gear Box Mounts (sold separately) allow you to mount speed reducers to machinery or other surfaces where fastening into the bottom of the speed reducer is not possible.

	Speed Reducers																Mounts
	Max. Output		Max. Input		Input Shaft		Output Shaft			Overall
	Torque	Speed, rpm	Speed, rpm	Power, hp	Dia.	Lg.	Dia.	Lg.	Shaft Ctr.-to-Ctr. Distance	Lg.	Wd.	Ht.	Radial Load Cap., lb.	Choose an Output Shaft Location		Each		Each







				5:1 Speed Ratio

				113 in·lbf @ 1,750 rpm	900	4,500	0.69	3/8"	0.81"	1/2"	1.19"	1"	4 1/2"	4 9/16"	3 5/8"	150	Left Side , Right Side	0000000	0000000	0000000	000000


				235 in·lbf @ 1,750 rpm	900	4,500	1.39	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	0000000	000000	0000000	00000
				432 in·lbf @ 1,750 rpm	720	3,600	2.55	5/8"	1.56"	7/8"	1.78"	1.75"	7 5/8"	6 7/8"	5 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000




						10:1 Speed Ratio

						138 in·lbf @ 1,750 rpm	450	4,500	0.44	3/8"	0.81"	1/2"	1.19"	1"	4 1/2"	4 9/16"	3 5/8"	150	Left Side , Right Side	0000000	000000	0000000	00000


						281 in·lbf @ 1,750 rpm	450	4,500	0.86	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	0000000	000000	0000000	00000
						536 in·lbf @ 1,750 rpm	360	3,600	1.61	5/8"	1.56"	7/8"	1.78"	1.75"	7 5/8"	6 7/8"	5 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000




								20:1 Speed Ratio

								149 in·lbf @ 1,750 rpm	225	4,500	0.27	3/8"	0.81"	1/2"	1.19"	1"	4 1/2"	4 9/16"	3 5/8"	150	Left Side , Right Side	0000000	000000	0000000	00000


								308 in·lbf @ 1,750 rpm	225	4,500	0.52	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	0000000	000000	0000000	00000
								590 in·lbf @ 1,750 rpm	180	3,600	0.97	5/8"	1.56"	7/8"	1.78"	1.75"	7 5/8"	6 7/8"	5 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
								892 in·lbf @ 1,750 rpm	180	3,600	1.4	5/8"	1.56"	1"	2.09"	2.06"	8 1/8"	7 5/16"	6 3/8"	700	Left Side , Right Side	0000000	00000000	0000000	00000




										30:1 Speed Ratio

										311 in·lbf @ 1,750 rpm	150	4,500	0.39	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	0000000	000000	0000000	00000


										573 in·lbf @ 1,750 rpm	120	3,600	0.65	5/8"	1.56"	7/8"	1.78"	1.75"	7 5/8"	6 7/8"	5 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
										871 in·lbf @ 1,750 rpm	120	3,600	0.99	5/8"	1.56"	1"	2.09"	2.06"	8 1/8"	7 5/16"	6 3/8"	700	Left Side , Right Side	0000000	00000000	0000000	00000




												40:1 Speed Ratio

												307 in·lbf @ 1,750 rpm	112	4,500	0.31	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	0000000	000000	0000000	00000


												609 in·lbf @ 1,750 rpm	90	3,600	0.57	5/8"	1.56"	7/8"	1.78"	1.75"	7 5/8"	6 7/8"	5 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
												876 in·lbf @ 1,750 rpm	90	3,600	0.81	5/8"	1.56"	1"	2.09"	2.06"	8 1/8"	7 5/16"	6 3/8"	700	Left Side , Right Side	0000000	00000000	0000000	00000
												1,206 in·lbf @ 1,750 rpm	90	3,600	1.08	3/4"	2"	1 1/8"	2.38"	2.38"	9"	7 13/16"	7"	900	Left Side , Right Side	0000000	00000000	0000000	00000




50:1 Speed Ratio

297 in·lbf @ 1,750 rpm	90													4,500	0.25	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	00000000	000000	———	0


1,484 in·lbf @ 1,750 rpm	72													3,600	1.08	3/4"	2"	1 1/8"	2.62"	2.62"	10"	8 1/2"	8"	1,000	Left Side , Right Side	00000000	00000000	———	0




		60:1 Speed Ratio

		271 in·lbf @ 1,750 rpm	75											4,500	0.22	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	0000000	000000	0000000	00000


		527 in·lbf @ 1,750 rpm	60											3,600	0.35	5/8"	1.56"	7/8"	1.78"	1.75"	7 5/8"	6 7/8"	5 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
		826 in·lbf @ 1,750 rpm	60											3,600	0.55	5/8"	1.56"	1"	2.09"	2.06"	8 1/8"	7 5/16"	6 3/8"	700	Left Side , Right Side	0000000	00000000	0000000	00000
		1,128 in·lbf @ 1,750 rpm	60											3,600	0.73	3/4"	2"	1 1/8"	2.38"	2.38"	9"	7 13/16"	7"	900	Left Side , Right Side	0000000	00000000	0000000	00000
		1,385 in·lbf @ 1,750 rpm	60	3,600										0.89	3/4"	2"	1 1/8"	2.63"	2.62"	10"	8 1/2"	8"	1,000	Left Side , Right Side	0000000	00000000	0000000	00000




				80:1 Speed Ratio

				222 in·lbf @ 1,750 rpm	56									4,500	0.15	1/2"	1.31"	5/8"	2"	1.33"	6 1/16"	6 1/16"	4 11/16"	200	Left Side , Right Side	0000000	000000	0000000	00000


				387 in·lbf @ 1,750 rpm	45									3,600	0.23	5/8"	1.56"	7/8"	1.78"	1.75"	7 5/8"	6 7/8"	5 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
				634 in·lbf @ 1,750 rpm	45									3,600	0.38	5/8"	1.56"	1"	2.09"	2.06"	8 1/8"	7 5/16"	6 3/8"	700	Left Side , Right Side	0000000	00000000	0000000	00000
				1,069 in·lbf @ 1,750 rpm	45	3,600								0.76	3/4"	2"	1 1/8"	2.63"	2.62"	10"	8 1/2"	8"	1,000	Left Side , Right Side	0000000	00000000	0000000	00000

Oil

		Each
1 qt. Lubricant	000000	000000

Gear Box Mounts

Mount right-angle speed reducers to machinery or other surfaces where fastening into the bottom of the speed reducer is not possible. Inner holes align with the speed reducer; use the outer holes to mount to a surface.

Overall			For Speed Reducer Mounting Hole			Mounting Hole
Lg.	Wd.	Thk.	Thread Size	Ctr.-to-Ctr. Lg.	Ctr.-to-Ctr. Wd.	Dia.	Ctr.-to-Ctr. Lg.	Ctr.-to-Ctr. Wd.	Includes		Each
4.63"	3.69"	0.44"	1/4"-20	2.63"	1.69"	0.34"	3 3/4"	2.88"	Four steel bolts for mounting plate to speed reducer	0000000	000000
5.38"	4.19"	0.53"	5/16"-18	3.25"	2"	0.34"	4.38"	3.31"	Four steel bolts for mounting plate to speed reducer	0000000	00000
7"	5.69"	0.69"	5/16"-18	4.19"	2.75"	0.41"	5 3/4"	4 1/2"	Four steel bolts for mounting plate to speed reducer	0000000	00000
7.75"	5.94"	0.72"	3/8"-16	5"	2.88"	0.47"	6.38"	4.69"	Four steel bolts for mounting plate to speed reducer	0000000	00000
8.5"	6.19"	3/4"	3/8"-16	5"	2.88"	0.47"	7.06"	4.88"	Four steel bolts for mounting plate to speed reducer	0000000	00000
9.63"	6.66"	3/4"	3/8"-16	6.38"	3.38"	0.53"	8"	5 1/4"	Four steel bolts for mounting plate to speed reducer	0000000	00000

Right-Angle Speed Reducers for Face-Mount AC Motors

Mount these speed reducers to a NEMA 56C motor to transmit motion at a 90° angle while reducing speed and increasing torque. All require lubrication (not included).

With 1 Output Shaft


With Left-Side Output	With Right-Side Output

Reducer with Left-Side Output

Reducer with Right-Side Output

Radial Load Capacity—Radial loads are loads that are perpendicular to the shaft. They’re commonly caused by components attached to shaft, such as pulleys and sprockets.

Mounts—Gear Box Mounts (sold separately) allow you to mount speed reducers to machinery or other surfaces where fastening into the bottom of the speed reducer is not possible.

	Speed Reducers															Mounts
	Max. Output		Max. Input			Output Shaft			Overall
	Torque	Speed, rpm	Speed, rpm	Power, hp	For Input Shaft Dia.	Dia.	Lg.	Shaft Ctr.-to-Ctr. Distance	Lg.	Wd.	Ht.	Radial Load Cap., lb.	Choose an Output Shaft Location		Each		Each
For NEMA 56C Motor Frames







				5:1 Speed Ratio

				113 in·lbf @ 1,750 rpm	900	4,500	0.5	5/8"	1/2"	1.19"	1"	5 5/8"	5 3/4"	5 3/4"	150	Left Side , Right Side	0000000	0000000	0000000	000000


				235 in·lbf @ 1,750 rpm	900	4,500	1	5/8"	5/8"	2"	1.33"	6 1/8"	7"	6"	200	Left Side , Right Side	0000000	000000	0000000	00000
				432 in·lbf @ 1,750 rpm	720	3,600	2	5/8"	7/8"	1.78"	1.75"	7 1/2"	7 1/4"	6 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000




						10:1 Speed Ratio

						138 in·lbf @ 1,750 rpm	450	4,500	0.33	5/8"	1/2"	1.19"	1"	5 5/8"	5 3/4"	5 3/4"	150	Left Side , Right Side	0000000	000000	0000000	00000


						281 in·lbf @ 1,750 rpm	450	4,500	0.75	5/8"	5/8"	2"	1.33"	6 1/8"	7"	6"	200	Left Side , Right Side	0000000	000000	0000000	00000
						536 in·lbf @ 1,750 rpm	360	3,600	1.5	5/8"	7/8"	1.78"	1.75"	7 1/2"	7 1/4"	6 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000




								20:1 Speed Ratio

								149 in·lbf @ 1,750 rpm	225	4,500	0.25	5/8"	1/2"	1.19"	1"	5 5/8"	5 3/4"	5 3/4"	150	Left Side , Right Side	0000000	000000	0000000	00000


								308 in·lbf @ 1,750 rpm	225	4,500	0.5	5/8"	5/8"	2"	1.33"	6 1/8"	7"	6"	200	Left Side , Right Side	0000000	000000	0000000	00000
								590 in·lbf @ 1,750 rpm	180	3,600	1	5/8"	7/8"	1.78"	1.75"	7 1/2"	7 1/4"	6 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
								892 in·lbf @ 1,750 rpm	180	3,600	1	5/8"	1"	2.09"	2.06"	8 1/8"	7 9/16"	7 1/4"	700	Left Side , Right Side	0000000	000000	0000000	00000




										30:1 Speed Ratio

										311 in·lbf @ 1,750 rpm	150	4,500	0.33	5/8"	5/8"	2"	1.33"	6 1/8"	7"	6"	200	Left Side , Right Side	0000000	000000	0000000	00000


										573 in·lbf @ 1,750 rpm	120	3,600	0.5	5/8"	7/8"	1.78"	1.75"	7 1/2"	7 1/4"	6 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
										871 in·lbf @ 1,750 rpm	120	3,600	1	5/8"	1"	2.09"	2.06"	8 1/8"	7 9/16"	7 1/4"	700	Left Side , Right Side	0000000	000000	0000000	00000




												40:1 Speed Ratio

												307 in·lbf @ 1,750 rpm	112	4,500	0.25	5/8"	5/8"	2"	1.33"	6 1/8"	7"	6"	200	Left Side , Right Side	0000000	000000	0000000	00000


												609 in·lbf @ 1,750 rpm	90	3,600	0.5	5/8"	7/8"	1.78"	1.75"	7 1/2"	7 1/4"	6 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
												876 in·lbf @ 1,750 rpm	90	3,600	0.75	5/8"	1"	2.09"	2.06"	8 1/8"	7 9/16"	7 1/4"	700	Left Side , Right Side	0000000	000000	0000000	00000
												1,206 in·lbf @ 1,750 rpm	90	3,600	1	5/8"	1 1/8"	2.38"	2.38"	8 3/4"	8"	7 1/4"	900	Left Side , Right Side	0000000	00000000	0000000	00000




60:1 Speed Ratio

271 in·lbf @ 1,750 rpm	75													4,500	0.17	5/8"	5/8"	2"	1.33"	6 1/8"	7"	6"	200	Left Side , Right Side	0000000	000000	0000000	00000


527 in·lbf @ 1,750 rpm	60													3,600	0.33	5/8"	7/8"	1.78"	1.75"	7 1/2"	7 1/4"	6 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
826 in·lbf @ 1,750 rpm	60	3,600												0.5	5/8"	1"	2.09"	2.06"	8 1/8"	7 9/16"	7 1/4"	700	Left Side , Right Side	0000000	000000	0000000	00000
1,128 in·lbf @ 1,750 rpm	60	3,600	0.75											5/8"	1 1/8"	2.38"	2.38"	8 3/4"	8"	7 1/4"	900	Left Side , Right Side	0000000	00000000	0000000	00000
1,385 in·lbf @ 1,750 rpm	60	3,600	0.75											5/8"	1 1/8"	2.63"	2.62"	9 1/2"	9"	8 1/2"	1,000	Left Side , Right Side	0000000	00000000	0000000	00000




		80:1 Speed Ratio

		222 in·lbf @ 1,750 rpm	56											4,500	0.16	5/8"	5/8"	2"	1.33"	6 1/8"	7"	6"	200	Left Side , Right Side	0000000	000000	0000000	00000


		387 in·lbf @ 1,750 rpm	45	3,600										0.25	5/8"	7/8"	1.78"	1.75"	7 1/2"	7 1/4"	6 3/4"	500	Left Side , Right Side	0000000	000000	0000000	00000
		634 in·lbf @ 1,750 rpm	45	3,600	0.33									5/8"	1"	2.09"	2.06"	8 1/8"	7 9/16"	7 1/4"	700	Left Side , Right Side	0000000	000000	0000000	00000
		1,069 in·lbf @ 1,750 rpm	45	3,600	0.75									5/8"	1 1/8"	2.63"	2.62"	9 1/2"	9"	8 1/2"	1,000	Left Side , Right Side	0000000	00000000	0000000	00000

Oil