Motor Covers | McMaster-Carr

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For Maximum Sprocket OD

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For Maximum Sprocket Width

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For Fan Diameter

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EAR99

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Performance

Corrosion Resistant

Made-to-Order

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Mounting Location

Shaft Diameter

Maximum Temperature

Motor Frame Size

Construction

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Thread Size

Mounting Fastener Head Style

Flat

Socket

Mounting Fastener Thread Size

62 Products

Chain and Belt Guards

Prevent chain and belt slippage and protect your drive mechanism from interference. To mount, punch screw holes or weld.

For Max. Sprocket Ctr.-to-Ctr.	For Max. Sprocket Wd.	For Max. Large Sprocket OD	For Max. Small Sprocket OD	Guard Lg.	Guard Dp.	Material	Ga.	Mounting Fasteners Included		Each
10 1/2"	1 3/4"	7"	3"	19 1/2"	2 3/4"	Steel	14	No	6248K34	0000000
14 1/2"	2 7/8"	13"	4 5/8"	27 5/16"	3 7/8"	Steel	14	No	6248K35	000000
15"	3 1/4"	14 3/4"	7"	29 7/8"	4 1/4"	Steel	14	No	6248K36	000000
20 1/2"	3 1/4"	14 3/4"	5 1/2"	34 5/8"	4 1/4"	Steel	14	No	6248K37	000000
23 1/2"	4"	19"	6"	40"	5"	Steel	14	No	6248K38	000000
27 1/2"	4"	19"	8"	45"	5"	Steel	14	No	6248K39	000000
31 1/2"	4 3/4"	23 1/2"	11 1/4"	52 7/8"	5 3/4"	Steel	14	No	6248K41	000000

Corrosion-Resistant Chain and Belt Guards

Made of ABS, these plastic guards won’t rust, and they absorb impact from chain and belt drives. Guards prevent chain and belt slippage and protect your drive mechanism from interference. Drill holes for mounting and venting.

For Max. Sprocket Ctr.-to-Ctr.	For Max. Sprocket OD	Guard Lg.	Guard Dp.	Flange Thk.	Material	Max. Mounting Hole Dia.	Mounting Fasteners Included	Max. Temp., ° F
6"	5 5/8"	11 5/8"	2 1/2"	7/8"	ABS	1/4"	No	200	7352K13
8 1/8"	6 3/4"	14 7/8"	3 1/2"	7/8"	ABS	1/4"	No	200	7352K15
9"	5 3/4"	14 3/4"	2 1/2"	7/8"	ABS	1/4"	No	200	7352K24
11 1/4"	6 3/4"	18"	3 1/2"	7/8"	ABS	1/4"	No	200	7352K16
11 7/8"	5 5/8"	17 1/2"	2"	7/8"	ABS	1/4"	No	200	7352K22
14"	5 3/4"	19 3/4"	2 1/2"	7/8"	ABS	1/4"	No	200	7352K14
17 3/8"	6 3/4"	24 1/8"	3 1/2"	7/8"	ABS	1/4"	No	200	7352K17
19 7/8"	5 5/8"	25 1/2"	2"	7/8"	ABS	1/4"	No	200	7352K11
20 3/8"	6 3/4"	27 1/8"	3 1/2"	7/8"	ABS	1/4"	No	200	7352K18
23"	5 3/4"	28 3/4"	2"	7/8"	ABS	1/4"	No	200	7352K12
25 3/8"	6 3/4"	32 1/8"	3 1/2"	7/8"	ABS	1/4"	No	180	7352K19
27 3/8"	5 7/8"	33 1/4"	2"	7/8"	ABS	1/4"	No	200	7352K23
29 3/8"	6 3/4"	36 1/8"	3 1/2"	7/8"	ABS	1/4"	No	200	7352K21
33 1/8"	7"	40 1/8"	3 1/2"	7/8"	ABS	1/4"	No	200	7352K25

Made-to-Order Chain and Belt Guards

If none of our standard guards fit your chain or belt system, we'll create one to suit your needs. Guards prevent chain and belt slippage and protect your drive mechanism from interference. To mount, punch screw holes or weld.

Select the sprocket center-to-center size range that matches your system. Then specify the following dimensions: sprocket center-to-center; large sprocket OD; small sprocket OD; clearance between sprocket and side of guard (2" of clearance is recommended); and guard depth (1" of clearance is recommended).

Choose a Sprocket Center-to-Center	Material	Ga.	Mounting Fasteners Included		Each
0.1" to 12.0"	Steel	14	No	6248K61	0000000
12.1" to 22.0"	Steel	14	No	6248K62	000000
22.1" to 32.0"	Steel	14	No	6248K63	000000
32.1" to 48.0"	Steel	14	No	6248K64	000000

Fan Shroud Filters


Fan-Front Mount	Fan-Back Mount


Fan-Front Mount Polypropylene Filter	Fan-Back Mount Polyester Plastic Filter	Fan-Back Mount Polypropylene Filter

These filters fit over fans with round guards to trap dust and debris, keeping contaminants out of the air and off of your fan. An elastic band holds them securely in place.

Fan-Front Mount—Fan-front-mount filters fit over the entire front of fans, blocking dust that has entered the fan from blowing back out into the air.

Fan-Back Mount—Fan-back-mount filters have a center hole, and secure around a fan’s motor housing with a hook and loop closure. They filter air as it enters the fan, protecting the blades and bearings from wear and damage while also reducing the amount of dust the fan will blow out.

Polyester Plastic Filter—Polyester plastic filters are disposable—replace them when they’re dirty.

Polypropylene Filter—Polypropylene filters have an electrostatic charge that attracts particles, and can be washed and reused.

White—Dirt and dust stands out on white filters, so it’s easy to see when they need to be cleaned or replaced.

	Pkg. Qty.		Pkg.
Fan-Front Mount







	Polypropylene Filter

	20"	Not Rated	White	1	3700N134	000000


	24"	Not Rated	White	1	3700N136	00000
	26"	Not Rated	White	1	3700N137	00000
	30"	Not Rated	White	1	3700N139	00000


	Fan-Back Mount







					Polyester Plastic Filter

					18"	Not Rated	White	12	3700N101	000000


					24"	Not Rated	White	12	3700N102	000000
					26"	Not Rated	White	12	3700N103	000000
					30"	Not Rated	White	12	3700N104	000000
					32"	Not Rated	White	12	3700N105	000000
					36"	Not Rated	White	12	3700N106	000000




							Polypropylene Filter

							17"	Not Rated	White	1	3700N115	00000


							24"	Not Rated	White	1	3700N116	00000
							30"	Not Rated	White	1	3700N117	000000
							34"	Not Rated	White	1	3700N118	000000
							38"	Not Rated	White	1	3700N119	000000

Shaft Grounding Rings

Shaft Grounding Ring Shown

Installed

One Piece

Two Piece

Prevent motor downtime by protecting bearings from stray currents generated by variable frequency drives. These grounding rings create a path for stray currents, so they won't damage bearing surfaces. Use them on AC motors.

One Piece—One-piece rings slide on from the end of the shaft.

Two Piece—Two-piece rings simplify installation when motors are connected to equipment.

					One Piece		Two Piece
	For Shaft Dia.	For Motor Frame Size	Mounting Hardware Included	Includes		Each		Each
Aluminum



		5/8"	NEMA 56	Yes	16 Brackets (4 each of 4 Common Styles)	4805N11	0000000	4805N22	0000000


		7/8"	NEMA 56HZ, NEMA 143T, NEMA 145T	Yes	16 Brackets (4 each of 4 Common Styles)	4805N12	000000	4805N23	000000
		1 1/8"	NEMA 182T, NEMA 184T	Yes	16 Brackets (4 each of 4 Common Styles)	4805N13	000000	4805N24	000000
		1 3/8"	NEMA 213T, NEMA 215T	Yes	16 Brackets (4 each of 4 Common Styles)	4805N14	000000	4805N25	000000
		1 5/8"	NEMA 254T, NEMA 256T, NEMA 284TS, NEMA 286TS	Yes	16 Brackets (4 each of 4 Common Styles)	4805N15	000000	4805N26	000000
		1 7/8"	NEMA 284T, NEMA 286T, NEMA 324TS, NEMA 326TS, NEMA 364TS, NEMA 365TS	Yes	16 Brackets (4 each of 4 Common Styles)	4805N16	000000	4805N27	000000
		2 1/8"	NEMA 324T, NEMA 326T, NEMA 404TS, NEMA 405TS	Yes	16 Brackets (4 each of 4 Common Styles)	4805N17	000000	4805N28	000000
		2 3/8"	NEMA 364T, NEMA 365T, NEMA 444TS, NEMA 445TS, NEMA 447TS, NEMA 449TS	Yes	16 Brackets (4 each of 4 Common Styles)	4805N18	000000	4805N29	000000
		2 7/8"	NEMA 404T, NEMA 405T	Yes	16 Brackets (4 each of 4 Common Styles)	4805N19	000000	4805N31	000000
		3 3/8"	NEMA 444T, NEMA 445T, NEMA 447T, NEMA 449T	Yes	16 Brackets (4 each of 4 Common Styles)	4805N21	000000	4805N32	00000000

Accessories for Grounding Rings

Conductive Adhesives

Image of Product. Front orientation. Grounding Rings.

Use adhesives to install rings without having to drill or tap into motor frames.

Container
Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hr.	Mix Ratio		Each
0.5	Adhesive	10	24	1:1	4805N33	0000000

Conductive Coatings

Apply conductive coatings to motor shafts before installing the rings to improve the conductivity of the steel shaft surface that touches the grounding ring.

Container		Dry Time
Size, fl. oz.	Type	Touch, min.	Overall, hr.	Max. Temp., ° F	Application Temp., ° F	Color		Each
0.5	Bottle	30	24	330	72 to 300	Gray	4805N34	0000000