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

A punch and back-up anvil (see dimensions below) are essential to proper self-clinching installation.

Customized Products

Spyraflo develops and supplies unique bearing assemblies to customer specifications. We have considerable expertise in helping customers achieve material and assembly cost savings as well as enhanced bearing performance. Some examples:

	Extra-long retainers with thicker walls and external snap ring grooves
	Different finishes on retainers including bright zinc-chromate, yellow zinc chromate, black anodizing, and Mil-spec black anodizing
	Special flanges including right angle flanges for pillow-block configuration
	Plastic bearing inserts injection molded from alternate bearing-grade plastics
	Molecular bonding of tungsten di-sulfide or other "space age" materials to dry bronze plane bearings
	Special food-grade oils and lubricants
	"Quick Break" alignable bearings that require very little force to align

Bearing Recommendation

Spyraflo will recommend the proper bearing, based on application information.

Wear Calculations-Plane Bearings

Spyraflo will recommend the proper bearing, based on application information.

The INA Corporation Needle Bearings

Spyraflo uses INA Corporation as the exclusive source of needle bearings in all Spyraflo Needle Bearing Assemblies.

Spyraflo Engineering can advise you of the specifications provided by INA, and refer you to the appropriate INA publications and technical support.

www.ina.com/us

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.

Spyraflo, Inc. holds patents or patents-pending on many of the elements and combinations of elements found in our bearing assemblies. References to INA Corporation, its products and trademarks are used by permission.

www.ina.com/us