Stopper bolts / screw type with polyurethane rubber

App. Example

General Information - Stopper Bolts

Stop bolt selection details

- Material: steel, stainless steel

- Coatings: uncoated, nickel-plated

- Hardness: 32 to 55HRC

- Wrench width: 3 to 20 mm

- Head height: up to 50 mm

- Threads: M3 to M12

- Head diameter: 5 to 20 mm

- Diameter mounting side: 2 to 12 mm (m6)

- Brush head: polyurethane rubber (PUR) with Shore A90

Description/Basics

The stopper bolt from the group of stopper elements serves primarily as a stop in mechanical engineering (collision protection). In addition, it is increasingly used to determine the final position for workpieces and in movable applications in device construction (e.g., workpiece carriers).

In principle, MISUMI offers two mounting variants of the stop bolts. The commercially available variants are threaded stop bolts. Threaded stopper bolts have the advantage that they are easy to assemble and disassemble. Furthermore, the thread of the stop bolt can be used to adjust the spacing and the end position.
In addition, MISUMI offers non-threaded stop bolts for pressing in with fit tolerance as a further assembly variant. These stop bolts can also be inserted into the component to be moved in the event of frequent collisions to protect the component. In order to strengthen the component protection, the different designs of the stop bolts can also be combined with one another.
The undercuts at the transition from the shaft to the head ensures that in the event of impact energy can be transferred to the support surface over as large an area as possible.

As a rule, stop bolts have a flat contact surface. Correct alignment is necessary so that the entire contact surface can be used. If exact alignment is not possible, MISUMI also offers stop bolts with a spherical contact surface.
Both variants of stop bolts are protected from increased wear or damage with a hardened (tempered) contact surface. A low-wear stop bolt is necessary, especially with high cycles and frequent collisions. The stop bolts are also available with a cushioned contact surface made of polyurethane rubber. These can reduce the shock impulse, vibrations and associated noise.

If there is only a limited installation space, MISUMI offers the special form with a key hole on the head side. This facilitates the adjustment and installation of the stop bolt even when access is difficult.

Threaded stopper blocks are suitable for fastening stop bolts that have a configurable height.

Alternatively, MISUMI offers a large number of stopper bolts with brush heads and dampers, which, contrary to the stop bolt, have primarily damping properties.
If component guidance is required in addition to rigid and precise positioning, a height adjusting pin with a collar can serve as a guided stopper.

Application examples

Application example – end stop with threaded stop bolt
(1) Adjustable shock absorber, (2) Stop bolts, (3) Threaded Stopper Block

Application example – workpiece carrier with stop bolt
(1) Stop bolt with rubber, (2) ฺBelt conveyor, (3) Workpiece carrier

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry