Vlier SS88 Round Spring Locating Stop 0.875in Base

Product Description

The VLIER SS88 is a round spring locating stop designed to provide controlled, spring-loaded positioning in precision assembly and tooling applications. The unit features an aluminum body with a steel stop head, combining lightweight construction with a hardened contact surface. The stop head measures 0.375 inches in outside diameter with a stroke length of 0.125 inches. Spring end forces progress from 5.13 pounds initial to 10 pounds mid-stroke to 14.9 pounds at full compression, making the SS88 suitable for repeatable part location and indexing tasks. Licensed machinists, tool-and-die technicians, and mechanical assembly specialists are the primary installers of this component.

The SS88 is used in jigs, fixtures, and production tooling where a spring-loaded stop is needed to locate or retain workpieces consistently. The compact body measures 0.688 inches in length by 0.875 inches in width and mounts via slotted holes spaced 0.656 inches center-to-center, with 0.593 inches from hole center to the nearest edge. The slotted mounting pattern allows minor positional adjustment during fixture setup before final fastener torque is applied.

Key Features

• Aluminum body construction reduces fixture weight while maintaining structural rigidity
• Steel stop head provides a durable contact surface at the locating point
• Three-stage spring force profile: 5.13 lb initial, 10 lb mid-stroke, 14.9 lb final end force
• Slotted mounting holes (0.136 inches wide x 0.136 inches long) allow positional fine-tuning
• 0.125 inches stroke length suits applications requiring minimal travel with firm positive stop
• Compact footprint fits tight fixture layouts with limited real estate

Compatibility

Designed as a direct-mount spring locating stop for use in standard tooling, jigs, and fixturing applications where a round-head spring stop with slotted base mounting is required.

Installation Notes

Installation is performed by toolmakers or fixture builders using standard hand tools and appropriate fasteners through the slotted mounting holes. Ensure the mounting surface is flat and clean before seating the base to maintain accurate stop positioning. Finger-tighten fasteners first, verify positional alignment of the stop head relative to the workpiece datum, then secure fasteners fully. Do not exceed the rated final end force of 14.9 pounds during operation, as overloading the spring mechanism can affect repeatability and service life.