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Tappex Grooved Pins
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Catalog excerpts

Tappex Grooved Pins - 1

Simple Hole Preparation Resistance To Shock And Vibration Total Range Simple Installation No reaming or threading of the hole prior to installation is required Because the pin is held in position under elastic tension it cannot easily be dislodged in harsh Standard pin types are available for many applications eliminating the need for more labour intensive or complex fasteners, or custom designed expensive parts. When removed from the application the grooves recover their form and can be reused many times with only minimal reduction in pull out performance. Providing correct procedures are followed (see below) there is no need for special installation equipment for small volumes. Where high production quantities are anticipated the pin can easily be fed and does not require sophisticated installation equipment. The Tappex Grooved Pin is a solid steel fastener giving high shear strength and good wear Installation Information Hole Preparation When drilling the hole for installation of a grooved pin a standard twist drill should be used of the same nominal diameter as the ungrooved pin. Hole tolerance H9 for pins under 3mm and H11 for 3mm and above although in steel a slightly larger hole will only marginally affect withdrawal loads. Tappex Grooved Pins are produced with a minus tolerance on the ungrooved diameter to allow an The tensile strength of the pin must be the same as or higher than the strength of the component Parallel groove pins require significantly higher installation forces than tapered groove pins. To eliminate the chance of any difficulty during installation a 60° counter sink should be incorporated into the hole and the pin should be slightly lubricated prior to installation. During installation it is important to ensure correct alignment between the pin and the hole. Installation Forces These figures give data on average installation forces required for tapered and parallel grooves. Generally the force to remove a pin is slightly more than the force required to install it. Tapered Grooves - insertion force in kgs per length of groove. Product Identification The part number is made up of the nominal diameter and effective length. The example shown here is for Grooved Pin S8 - third length centre tapering grooves - DIN 1475. A standard part number assumes a plain steel material. Other materials should be noted at the time of specifying by quoting the appropriate material reference (see page 7). Product Type diameter

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Tappex Grooved Pins - 2

Grooved Pins Standard Types Full length tapering grooves Original replacement for a conventional taper pin eliminating reaming of drilled holes thereby reducing machining time. Tapered grooves allow easy progressive installation. Used as a locking pin, fixing pin or connecting pin. Half length tapering grooves Plain portion over half length serves as free moving hinge pin for application as a dowel pin or linkage bolt; axle or bearing pin. Half tapered grooves ease assembly in through drilled holes. Full length parallel grooves Maximum retention over whole length produced by full length...

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Tappex Grooved Pins - 3

Grooved Pins Standard Types Third length tapering grooves ■ Central tapering grooves for ease of installation. • Two annular rings for reciprocating springs or as a fixed axle in conjunction with retaining rings or circlips. Third length reverse tapering grooves In applications where only one direction of assembly is possible ( e.g. where one component incorporates a blind hole) double tapering grooves in one direction ease installation. Central plain portion for free fit of a moving component. For use as an axle, pulley or lever. Third length reverse tapering grooves In applications where...

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Tappex Grooved Pins - 4

Headed Grooved Pins Standard Types Round Head Drive Pin DIN 1476 Combining the grooved pin principle with a headed stud makes it possible to use the fastening method for the retention of items in an Parallel grooves give maximum retention. For fixing name plates, panels, linings,pipe clips or any additional Very rapid installation time shows a cost saving over conventional Countersunk Head Drive Pin DIN 1477 Similar applications to pin 063 but with a countersunk head. For applications where a flush fit is necessary. Increased groove length will give increased retention where the application...

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Tappex Grooved Pins - 5

Material Specifications Grooved Pins, Headed Grooved Pins & Blind Drive Pin Rivets The Tappex Grooved Pin system is manufactured in West Germany, consequently material specifications relate to DIN standards. Various options are available and these are given below together with DIN reference numbers where appropriate and the corresponding British Standard number where available. Various standards of finish are available where applicable. If more information is required please contact our Technical Sales Department. Grooved Pins Steel - carbon Stainless Steel - Ferritic Stainless Steel -...

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Tappex Grooved Pins - 6

Full length tapering grooves ...DIN 1471 For standard tolerance information see page 6 / Body length Tolerance on grooved diameter d, Tolerance on drilled hole diameter Dimensions in mm Prefered sizes in bold Typical Applications * The grooved diameter d2 can only be measured with a ring gauge. Grooved diameters stated in the table apply only to material 9SMnPb28K - DIN 1651. The maximum grooved size cannot be achieved w th some steels and some non-ferrous metals.

Open the catalog to page 6
Tappex Grooved Pins - 7

For standard tolerance information see page 6 / Body length Tolerance on grooved diameter d2 Tolerance on drilled hole diameter Dimensions in mm Prefered sizes in bold Typical Applications * The grooved diameter d2 can only be measured with a ring gauge. Grooved diameters stated in the table apply only to material 9SMnPb28K - DIN 1651. The maximum grooved size cannot be achieved with some steels and some non-ferrous metals, particularly in the case of pins with short grooves.

Open the catalog to page 7
Tappex Grooved Pins - 8

Full length parallel grooves ...DIN 1473 For standard tolerance information see page 6 Grooved diameter Body length Tolerance on grooved diameter d Tolerance on drilled hole diameter Dimensions in mm Prefered sizes in bold Typical Applications * The grooved diameter d2 can only be measured with a ring gauge. Grooved diameters stated in the table apply only to material 9SMnPb28K - DIN 1651. The maximum grooved size cannot be achieved with some steels and some non-ferrous metals.

Open the catalog to page 8

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