SKS3 Steel Oil-Free Heel Guide Rails (No Groove) - 8 mm Heel

This oil-free heel guide rail is used inside injection mold slide and undercut tooling to provide stable, clean linear guidance when contact contamination must be minimized. The no-groove heel design helps reduce oil carryover while maintaining consistent alignment through repeated cycling.

Typical scenarios include automotive connector and bracket molds where guide rails operate near appearance-critical surfaces and residue control is important. The 8 mm heel height supports controlled engagement with corresponding slide components for predictable motion.

It is also suited for electronics and optical housing tooling where compact, reliable motion guidance helps prevent debris migration into fine features. In addition, for maintenance-friendly retrofit assemblies, the available mounting hole counts (2, 3, 4) and the range of rail thickness and length simplify integration into existing guide-plate layouts.

• Oil-sensitive machine layouts: reduced contamination risk via no-groove heel
• Durable slide guidance: tool-steel construction supports long service in guide applications
• Practical mounting options: multiple hole configurations for installation flexibility

The standard variant uses SKS3 steel, a tool steel selected for slide and guide applications requiring good wear performance under repeated sliding contact. For alternative configurations, the product is also available in a copper alloy option, which can be chosen when the application benefits from copper-alloy tribological characteristics.

Since the specification list specifies material choices but does not provide hardness or heat-treatment data, the exact HRC and heat-treatment state (e.g., quenched & tempered or nitrided) must be confirmed for the specific SKU you select. In general design trade-offs are:

• SKS3 steel: typically prioritized for wear resistance and dimensional stability in guide rails
• Copper alloy: may be considered where sliding behavior and compatibility are critical, but wear/toughness balance differs from tool steels

Confirm the selected grade’s hardness and treatment in your quotation for final wear and toughness expectations.

Select rail dimensions by matching the thickness (T), width (W), and length (L) to the mating guide-plate / slide pocket geometry and the required stroke travel. This rail supports T = 15 ~ 35 mm, W = 15, 20, 12.5, or 25 mm, and L = 40 ~ 200 mm, so choose the closest match to minimize gaps and uneven load distribution.

For positioning, align the mounting hole count (2, 3, or 4 pieces) with your mold base or slide bracket pattern. When retrofitting, ensure the hole pattern corresponds to the existing fastener layout to avoid re-machining.

• Match T to the guide slot depth to maintain proper heel engagement
• Match W to the bearing surface width to control contact pressure
• Match L to cover the functional travel zone without overhang that can interfere with nearby components

Tolerance and fit requirements are application-specific; base alignment and fastener clearance should be verified against your guide-plate machining tolerances and the intended mounting method.