This diagram shows how the panel metal flows into the undercut groove during installation.

A punch and back-up anvil are essential to proper self-clinching installation.

Resources

Customized Solutions

In addition to the very broad standard product line, Spyraflo continues to develop and supply unique bearing solutions to meet a wide variety of customer application requirements. We have considerable expertise in tailoring existing products or developing completely unique products to achieve enhanced bearing performance and cost savings.

Typical Examples:

• Low profile bearings for limited access applications.
• Additional self-alignment, up to ±10°
• Extended length bearings, where a "Spacer" attribute is required.
• Alternative plating retainer requirements including Rohs compliant clear zinc.
• Electro-less Nickel plated pillow-blocks and housing-flanges.
• Special bearing assemblies including spindles and retaining clips.
• "Quick Break" alignment for lightly loaded applications.
• Special profile steel flanges.
• Unique bearing ID to meet special shaft requirements.
• High and Low Temperature bearing solutions.

Bearing Recommendations

Spyraflo application engineers will help determine bearing selection for a given application. Life and wear calculations link to life / wear calculation page.

Needle Roller Bearings

Spyraflo uses Schaefler – INA drawn-cup needle roller bearings. Spyraflo application engineers can advise on bearing selection, for detailed information refer to link to www.ina.com/us.

Guidelines

Installation of Spyraflo Self-Clinching Bearings must be done in a smooth continuous pressing operation (no hammer blows). The knurled flange will be embedded into the panel metal, forcing panel metal to flow into the undercut groove, thus locking the bearing retainer firmly into the panel. Leave the edge of the panel hole sharp, do not chamfer; deburr only minimally if at all. It is preferable to install the bearing opposite the direction of the drill bit or punch. A backup anvil is necessary, particularly on thin panels. The wall thickness of the anvil should be adequate enough to prevent the anvil from forming a depression in the panel during the pressing operation.

Panel metal should not exceed Rockwell B 60 for self-clinching "FS" bearings (steel retainers); Rockwell B 70 for "FSS" bearings (stainless steel retainers). In harder metals the flange may not embed completely flush. Spyraflo Engineering can advise techniques for installing self-clinching bearings in harder metals.