Sprocket Tensioners | McMaster-Carr

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25 Products

Adjustable-Screw Roller Chain and Belt Tensioners

Tensioners take up slack and allow you to adjust tension on your roller chain or belt. Precisely apply tension in a straight line by moving the adjustment screw. They are for use with idler sprockets or pulleys.

		Mounting Plate
Tension Force	For Idler ID	Ht.	Wd.	Overall Dp.	Material	Includes		Each







			Vertical Mount/Horizontal Mount

			Not Rated	1/4"	5 7/8"	1 1/2"	3 1/8"	Steel	Idler Shaft	6265K111	0000000


			Not Rated	3/8"	5 7/8"	1 1/2"	3 1/8"	Steel	Idler Shaft	6265K112	000000
			Not Rated	1/2"	5 7/8"	1 1/2"	3 1/8"	Steel	Idler Shaft	6265K5	000000
			Not Rated	5/8"	9"	2"	4 5/16"	Steel	Idler Shaft	6265K113	000000
			Not Rated	3/4"	9"	2"	4 5/16"	Steel	Idler Shaft	6265K114	000000
			Not Rated	7/8"	9"	2"	4 5/16"	Steel	Idler Shaft	6265K1	000000
			Not Rated	1 1/8"	13"	3"	6"	Steel	Idler Shaft	6265K2	000000

Adjustable-Arm Roller Chain and Belt Tensioners


Vertical Mount Shown with Sprocket (Not Included)	Horizontal Mount Shown with Sprocket (Not Included)

Tensioners take up slack and allow you to adjust tension on your roller chain or belt. Position the adjustment arm to control tension in a 360° arc. They are for use with idler sprockets or pulleys.

		Mounting Plate
Thread Size	Tension Force	Ht.	Wd.	Tension Arm Lg.	Overall Dp.	Material	Arm Rotation	Includes		Each







			Vertical Mount

			3/8"-16	Not Rated	3 1/4"	2"	2 1/2"	1 3/8"	Steel	360°	Idler Shaft	60225K11	0000000


			1/2"-13	Not Rated	5"	3 1/2"	3 13/16"	2"	Steel	360°	Idler Shaft	60225K12	000000
			5/8"-11	Not Rated	5"	3 1/2"	3 13/16"	2"	Steel	360°	Idler Shaft	60225K13	000000
			3/4"-10	Not Rated	5"	3 1/2"	3 13/16"	2"	Steel	360°	Idler Shaft	60225K25	000000




					Horizontal Mount

					3/8"-16	Not Rated	2 1/8"	2 1/4"	2 5/16"	2"	Steel	360°	Idler Shaft	60225K14	000000


					1/2"-13	Not Rated	3 5/16"	4"	3 13/16"	3 3/8"	Steel	360°	Idler Shaft	60225K15	000000
					5/8"-11	Not Rated	3 1/4"	4"	3 13/16"	3 3/8"	Steel	360°	Idler Shaft	60225K16	000000
					3/4"-10	Not Rated	3 5/16"	4"	3 13/16"	3 3/8"	Steel	360°	Idler Shaft	60225K26	000000
					1"-14	Not Rated	7 3/8"	7 1/2"	6 1/2"	11 1/4"	Cast Iron	360°	Idler Shaft	60225K311	000000

Spring-Loaded Adjustable-Arm Roller Chain and Belt Tensioners


Vertical Mount	Horizontal Mount	Replacement Springs

Tensioners take up slack and allow you to adjust tension on your roller chain or belt. A built-in spring allows the adjustment arm to apply continuous tension. They are for use with idler sprockets or pulleys.

Tensioners												Replacement Springs
		Mounting Plate
Thread Size	Tension Force, lbf	Ht.	Wd.	Tension Arm Lg.	Deflection Angle	Overall Dp.	Material	Arm Rotation	Includes		Each		Each







			Vertical Mount

			3/8"-16	45	5"	3 1/2"	5"	-45° to 45°	2 7/8"	Steel	180°	Idler Shaft, Internal Spring	60225K191	0000000	60225K29	000000


			1/2"-13	45	5"	3 1/2"	4 7/16"	-45° to 45°	2 7/8"	Steel	180°	Idler Shaft, Internal Spring	60225K21	000000	60225K29	00000
			5/8"-11	45	5"	3 1/2"	4 7/16"	-45° to 45°	2 7/8"	Steel	180°	Idler Shaft, Internal Spring	60225K22	000000	60225K29	00000
			3/4"-10	45	5"	3 1/2"	4 7/16"	-45° to 45°	2 7/8"	Steel	180°	Idler Shaft, Internal Spring	60225K27	000000	60225K29	00000




					Horizontal Mount

					3/8"-16	45	3 1/8"	4"	5"	-45° to 45°	2 1/2"	Steel	180°	Idler Shaft, Internal Spring	60225K192	000000	60225K29	00000


					1/2"-13	45	3 3/8"	3 1/4"	5"	-45° to 45°	4 5/16"	Steel	180°	Idler Shaft, Internal Spring	60225K23	000000	60225K29	00000
					5/8"-11	45	3 3/8"	3 1/4"	5"	-45° to 45°	4 5/16"	Steel	180°	Idler Shaft, Internal Spring	60225K24	000000	60225K29	00000
					3/4"-10	45	3 3/8"	3 1/4"	5"	-45° to 45°	4 5/16"	Steel	180°	Idler Shaft, Internal Spring	60225K28	000000	60225K29	00000