1 1/4"-12 Bumpers | McMaster-Carr

Filter by

System of Measurement

Inch

Height

Mount Type

Color

Hardness Rating

Hardness

Material

Energy Capacity

Body Thread Size

Nonmarking

Shape

Bumper Material

Stroke Length

For Use Outdoors

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Minimum Temperature

REACH

RoHS

Maximum Temperature

Body Material

Performance

Base Plate Material

5 Products

Reinforced Threaded-Hole Bumpers

Style 1

With a metal base plate for added strength, these bumpers withstand repeated impacts for a longer service life than all-rubber bumpers. You can also use them as spacers and noise reducers. Twist them onto a threaded stud on your equipment, or pair them with your own stud to create a custom-length bumper.

Multipurpose Neoprene About Multipurpose Neoprene

Style 1

A good choice for oily equipment that's exposed to sunlight, rain, and ozone. These aren't as oil resistant as Buna-N bumpers, but they can be used outdoors.

Hardness Rating—The harder the bumper, the better it withstands impact and abrasion over time. The softer the bumper, the more cushioning it provides for objects made of glass, soft metal, and other fragile materials. Bumpers with a medium rating offer a balance of impact resistance and cushioning.

	Thread
	Size	Dp.	OD	Ht.	Hardness	Hardness Rating	Color	Temp., ° F	Base Plate Material	Nonmarking	For Use Outdoors		Each
Style 1



		1 1/4"-12	1 1/4"	3"	2 3/4"	Durometer 40A	Medium Soft	Black	-40 to 200	Steel	No	Yes	9546K77	000000


		1 1/4"-12	1 1/4"	3"	2 3/4"	Durometer 75A	Hard	Black	-40 to 200	Steel	No	Yes	9546K531	00000

Abrasion-Resistant Polyurethane Rubber About Abrasion-Resistant Polyurethane Rubber

Style 1

Our toughest rubber bumpers, they keep their shape even when knocked and scraped by metal and other abrasive materials. They're often used on industrial vehicles, conveyors, and heavy construction equipment.

	Thread
	Size	Dp.	OD	Ht.	Hardness	Hardness Rating	Color	Temp., ° F	Base Plate Material	Nonmarking	For Use Outdoors		Each
Style 1



		1 1/4"-12	1 1/4"	3"	2 3/4"	Durometer 85A	Hard	Red	-40 to 200	Steel	No	Yes	9546K87	000000

Corrosion-Resistant Self-Adjusting Shock Absorbers

Made from stainless steel for excellent corrosion resistance in damp environments. Install shock absorbers in gantry systems, presses, and at stops along conveyors—they counteract the energy of moving objects to prevent damage to equipment and material. Use Mounting Blocks for Shock Absorbers (not included) and Mounting Nuts for Shock Absorbers (not included) for mounting.

Threaded-Body Mount

Image of Product. Front orientation. Contains Annotated. Shock Absorbers. Corrosion-Resistant Self-Adjusting Shock Absorbers.

					Body			Rod		Bumper
Energy Cap., in·lbf	Max. Cycles per min., cpm	Stroke Lg.	Extended Lg.	Compressed Lg.	Dia.	Thread Size	Material	Dia.	Material	Dia.	Material	Temp. Range, ° F		Each



	2,000	10	1"	5.25"	4.25"	1.25"	1 1/4"-12	Stainless Steel	0.28"	Stainless Steel	0.5"	Stainless Steel	-20 to 140	9553K5	0000000

Adjustable Shock Absorbers

Turn the knob on these shock absorbers to change deceleration to suit varying loads and speeds. They counteract the energy of moving objects to prevent damage to equipment and material. They're commonly used in gantry systems, presses, and conveyor stops.

Threaded-Body Mount

Threaded-body mount shock absorbers use Mounting Blocks for Shock Absorbers (not included) for mounting. They include mounting nuts.

						Body			Rod		Bumper
	Energy Cap., in·lbf	Max. Cycles per min., cpm	Stroke Lg.	Extended Lg.	Compressed Lg.	Dia.	Thread Size	Material	Dia.	Material	Dia.	Material	Temp. Range, ° F		Each
Variable Adjustment



		1,500	7	0.91"	5.44"	4.53"	1.25"	1 1/4"-12	Black-Oxide Steel	0.375"	Chrome-Plated Steel	1"	Steel	32 to 150	3742K15	0000000