Buy Taper Pins Online in Australia
Taper Pin Selection — Quick Reference (DIN 1 / ISO 2339)
Taper pins are precision-ground conical pins driving into reamed tapered holes — self-locking, repeatable, vibration-resistant alignment + locking for machine assemblies. The 1:50 taper standard creates a wedging friction fit that won't back out.
| Designation | Standard | Best For |
|---|---|---|
| Metric Taper Pin (DIN 1 / ISO 2339) | 1:50 taper | European + Australian machinery — workshop default |
| Imperial Taper Pin (ANSI B18.8.1) | 1:48 taper | US-origin machinery + imported equipment |
| Threaded Internal Taper Pin (DIN 7977) | 1:50 taper + female thread | Easy extraction via puller — toolroom assemblies |
| Threaded External Taper Pin (DIN 7978) | 1:50 taper + male thread | Easy removal — driven through, threaded shaft used to extract |
| Plain Taper Pin (Champion Assortment) | — | Small + large size kits — workshop spares |
Installation rule: Drill at the SMALL end diameter; ream with a tapered reamer matching the pin standard (1:50 or 1:48). Pin driven from LARGE end, removed from SMALL end with pin punch. Critical: Don't substitute parallel pins — taper pins prevent fretting under cyclic vibration that loosens parallel pins. Brand: Champion. Companion: coupling pins, clevis pins, dowel pins, pin punches, roll pin guide.
Taper Pins — Precision Locating and Locking Pins for Machine Assembly
Taper pins are precision-ground conical pins used to align and lock components in machine assemblies — providing repeatable, self-locking positioning without threads or fasteners. AIMS Industrial stocks taper pin assortment kits from Champion covering small and large size ranges for workshop, toolroom and machine maintenance use.
How Taper Pins Work
A taper pin is driven into a tapered, reamed hole that passes through two or more components. The conical shape creates a wedging action as the pin is driven in — locking both components together with a tight friction fit. The self-locking taper means the pin will not back out under vibration or cyclic loading. Removal requires driving the pin out from the small end using a pin punch.
Applications
Taper pins are used wherever precise, repeatable alignment and secure locking of machine components is required: gear and sprocket-to-shaft connections, coupling alignment, toolroom fixtures and jigs, machine tool spindle assemblies, and instrument and gauge mechanisms. They are an alternative to keys and set screws where a thin cross-section requires a compact fastening method.
Champion Taper Pin Kits
Champion CA1690 small taper pin assortment kit contains 140 pieces covering the small standard sizes. Champion CA1700 large taper pin assortment kit contains 33 pieces covering larger standard sizes. Both kits cover DIN 1 taper pins in hardened carbon steel. Assortment refill packs allow individual sizes to be restocked without replacing the full kit.
Reaming Requirements
Taper pin holes must be reamed to the correct taper — a straight drilled hole will not produce the correct fit. Standard taper pin reamers are sized to match the pin taper (1:50 taper ratio to DIN 258). Always ream the hole progressively and test-fit the pin before driving to the final position.
Need a specific taper pin size outside the assortment range? Contact our team.