Splined Yoke 08 Push Pin

Precision-engineered push-pin release splined yokes for agricultural and industrial PTO drive shafts — fast tool-free connection, manufactured to ISO 500 standards, supplied across the United Kingdom.

The Splined Yoke 08 Push Pin is a core connection component in PTO drive shaft assemblies, designed to deliver reliable, repeatable engagement between the tractor power take-off stub and the implement input shaft. Unlike conventional bolt-clamped yokes, the push-pin mechanism allows the operator to detach and reattach the shaft in seconds without any tools — a practical advantage when field conditions demand rapid implement changes. Each yoke is precision-machined from high-grade alloy steel, heat-treated for wear resistance, and finished with an anti-corrosion surface treatment suited to outdoor agricultural environments across England, Scotland, Wales, and Northern Ireland. Whether you are running arable equipment in East Anglia, grassland machinery in Yorkshire, or mixed-farm implements across the Scottish Borders, this component is engineered to keep your drivetrain locked and efficient through every working season.

How the Push-Pin Mechanism Works

The 08-series push-pin yoke uses a spring-loaded locking ball-and-pin system seated within the yoke bore. When the yoke is pushed onto the tractor PTO stub shaft, the splines engage and the locking pin snaps automatically into the shaft groove, creating a positive mechanical retention. To release, the operator simply depresses the push-pin button against spring pressure while sliding the yoke free — the entire operation takes under three seconds and requires no spanners, Allen keys, or specialist tools of any kind.

The internal spring is manufactured from high-tensile spring steel, providing consistent locking force across the rated torque range. The spline profile — available in 1 3/8″ Z6 (6-tooth) and 1 3/8″ Z21 (21-tooth) configurations, as well as 1 3/4″ Z6 and 1 3/4″ Z20 — ensures compatibility with the vast majority of agricultural tractors and implements sold in the United Kingdom, including those from John Deere, Fendt, CLAAS, Massey Ferguson, New Holland, and Case IH. The hardened steel yoke body withstands torsional shock loads and the progressive fatigue common to heavy cultivation work and high-inertia implements such as rotary cultivators, balers, and slurry tanker pumps.

Material & Construction

Technical Specification

All dimensional data in millimetres unless stated. Spline designations per ISO 500.

A = Yoke bore diameter  |  B = Hub length  |  C = Overall length  |  D = Pin diameter  |  E = Ear width  |  F = Spline size & tooth count

Why UK Operators Choose This Splined Yoke

Application Scenarios Across the UK

The Splined Yoke 08 Push Pin is most frequently specified for arable and mixed-farming PTO drive shafts where operators need to swap between implements multiple times per day. In grain-growing areas of Lincolnshire, Cambridgeshire, and the East Riding of Yorkshire, users connect and disconnect rotary cultivators, power harrows, grain augers, and seed drill fans using this same yoke profile dozens of times per season. The positive-lock mechanism eliminates the risk of an implement detaching mid-field — a safety concern that has resulted in HSE enforcement notices on UK farms where poorly fitted yokes were in use.

Beyond agriculture, the 08 push-pin splined yoke finds regular application in the construction plant sector, particularly with road-planers, concrete mixers driven from tracked carrier PTOs, and trenching machines used by civils contractors across the Midlands, South Wales, and Central Scotland. The Z21 21-tooth variant is preferred in high-torque industrial drives where the greater tooth count distributes stress more evenly and reduces fretting wear between yoke and shaft.

For municipal grounds maintenance operations — councils and grounds-care contractors operating gang mowers, flail mowers, and leaf blowers — the push-pin convenience is particularly valued as semi-skilled operators can attach implements without risk of incorrect fitment. The component is also specified in several UK-manufactured baling and wrapping machine drivetrain assemblies, where OEM engineers cite the consistent pin-spring retention force as a key factor in meeting product liability requirements.

Customer Success Stories

Manufacturing Facility & Custom Capabilities

Every Splined Yoke 08 Push Pin is produced in our dedicated PTO component manufacturing facility equipped with CNC turning and grinding centres, induction hardening lines, and CMM inspection stations. The facility operates ISO 9001 quality management processes, with dimensional inspection records retained for full traceability on every production batch. This level of process control is what allows us to quote tight dimensional tolerances — critical for OEM customers in the UK who cannot afford line stoppages due to incoming-goods failures.

Custom splined yoke specifications are a core part of what we offer UK buyers. If your application requires a non-standard bore diameter, a modified ear spacing, a different surface treatment, or a bespoke spring retention force, our applications engineering team can produce a fully dimensioned drawing for review within five working days. Prototype runs from as few as 10 pieces are supported, making us genuinely accessible to UK OEM machinery builders, not just large-volume importers. Minimum order quantities for standard catalogue items are flexible — please contact us to discuss your requirement.

Complete PTO Drive Shaft Range

The push-pin splined yoke is a component within a broader system. For UK customers sourcing complete PTO shaft assemblies, we supply four main series across the full torque and application spectrum:

Frequently Asked Questions

UK B2B Enquiries Welcome — Fast Quotation — Custom Specifications Supported

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