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Splined Yoke 01‑Push Pin
Precision-engineered push-pin splined yokes for agricultural and industrial PTO drive shafts — built for British farming conditions and heavy-duty power transmission applications across the UK and Europe.
The Splined Yoke 01-Push Pin is a core connection component in PTO drive shaft assemblies, designed to deliver fast, tool-free coupling and reliable torque transfer in demanding field and workshop environments. Unlike conventional collar-locking yokes, the push-pin mechanism allows operators to engage and disengage the PTO shaft from a tractor or implement in seconds — without spanners, without struggle, and without interrupting the work cycle. This matters enormously on British farms, where time efficiency and mechanical reliability are non-negotiable across seasons. Whether you are running a rotary cultivator across Yorkshire clay soils, driving a slurry tanker pump in the Scottish Borders, or powering a baler in the Welsh valleys, the push-pin splined yoke delivers the connection security your operation depends upon. The component is manufactured from high-grade alloy steel, precision splined to exacting dimensional standards, and surface-treated for corrosion resistance — a quality standard that UK agricultural engineers and machinery distributors have come to rely on.
Splined Yoke 01-Push Pin — Quick-release agricultural PTO connection yoke
Why Engineers Specify the Push-Pin Splined Yoke
The push-pin design addresses a longstanding frustration in PTO shaft management: the time and effort required to change implements during a working day. On mixed arable and livestock farms across England and Wales, a tractor may be coupled to three or four different implements within a single shift. Every second spent wrestling with a locked collar is productive time lost. The Splined Yoke 01-Push Pin eliminates that friction entirely, allowing a single-handed release and engagement cycle that keeps field operations moving. Beyond convenience, the design engineering behind this yoke ensures the push-pin locking mechanism does not compromise joint integrity under load — the pin seats positively within a machined recess in the tractor PTO stub, maintaining concentricity and preventing axial play under torque reversal conditions common in loader and baler applications.
Tool-Free Release
Single-action push-pin mechanism allows rapid coupling and decoupling without any tools — critical for high-frequency implement changes on UK mixed farms.
High-Grade Alloy Steel
Machined from forged alloy steel with precision spline profiles, delivering high fatigue resistance and consistent torque capacity across the full operating load range.
Wide Series Range
Ten series variants (1.0501B through 38.0501B) cover a broad spectrum of PTO shaft sizes, matching the diversity of tractor and implement pairings found across British agricultural operations.
Positive Locking Under Load
The pin seating geometry prevents accidental disengagement during torque reversal or vibration — a safety-critical requirement for mower-conditioners, hedge cutters, and rotary cultivators.
Corrosion-Resistant Finish
Surface treatment protects against the wet, muddy, and saline environments typical of UK coastal farming areas and winter field operations in northern England and Scotland.
Universal 1 3/8″ Z6 Interface
Standardised to the 1 3/8″ 6-spline profile (1 3/8″Z6) used by the majority of European and British tractor manufacturers, ensuring cross-brand compatibility straight from the box.
Materials, Operating Principle & Application Scenarios
Every Splined Yoke 01-Push Pin begins as a hot-forged alloy steel billet — typically 20CrMnTi or equivalent grade — which provides the combination of surface hardness and core toughness needed to survive repeated shock loading without fatigue cracking. After forging, the yoke bore is precision-broached to produce a clean 6-spline internal profile dimensioned to 1 3/8″ Z6 standard. The push-pin housing is machined as an integral part of the yoke body rather than added as a separate pressed insert, which eliminates a common failure point seen in lower-specification competitors. A spring-loaded stainless steel pin sits within a hardened cross-bore; when the yoke is pushed onto the PTO stub shaft, the pin snaps into a mating groove in the stub, creating a positive axial lock. To release, the operator simply depresses the pin button — typically requiring no more than 5 kg of finger force — and the yoke slides cleanly free. This mechanism remains reliable across a service temperature range of -20 °C to +80 °C, covering the full climate range encountered across all UK agricultural regions from Orkney to Cornwall. Application scenarios include rotary tillers, flail mowers, fertiliser spreaders, slurry pumps, round balers, straw choppers, and grain augers — wherever a reliable, repeatable PTO connection is required.
Technical Specifications — Dimensional Data
All dimensions in millimetres. Spline interface: E = 22 mm, F = 1 3/8″Z6 (uniform across all series).
Dimensional reference drawing — Splined Yoke 01-Push Pin
* E and F values apply uniformly to all series. Custom bore profiles and spline configurations available on request.
Customer Success: Northumberland Arable Contractor
Riverside Agri-Services Ltd, Morpeth, Northumberland
Riverside Agri-Services operates a fleet of twelve tractors providing contract cultivation, drilling, and baling services across 4,200 hectares of arable land in Northumberland and County Durham. Their previous PTO yoke supplier provided collar-type yokes that required a spanner for removal — a particular problem during autumn drilling campaigns when operators routinely switch between subsoilers, power harrows, and seed drills multiple times per day.
Following a trial of the Splined Yoke 01-Push Pin (series 5.0501B and 6.0501B) across two tractors in spring 2024, the business converted its entire fleet. The engineering team at Riverside reported that implement changeover time per machine dropped from an average of 8 minutes to under 90 seconds. Over a 60-day autumn campaign with 12 tractors, this translated to roughly 63 hours of recovered productive time — a measurable improvement to their seasonal output without any additional capital investment.
What UK Customers Are Saying
“We run JD 6R and Fendt 724 tractors across mixed arable ground in Lincolnshire. The push-pin yokes have been on our power harrows for two full seasons — not a single failure, and the lads absolutely love how quick they are to swap out.”
“Ordered the 7.0501B series for our contractor slurry fleet operating in the Scottish Borders. Delivery was fast, packaging protected the components well, and fitting onto our existing Claas shafts was straightforward. Good quality splines — no wobble, no play.”
“We supply replacement PTO parts to dealers across East Anglia and have stocked the push-pin yoke range for over a year. Consistently good dimensional accuracy, and we have had zero warranty returns. A reliable product from a supplier we trust for the long term.”
Complete PTO Drive Shaft Series
The Splined Yoke 01-Push Pin is designed for use across our full range of PTO drive shaft assemblies. Each series is engineered for a specific torque and application envelope, and all are available with push-pin yoke fitment as standard or on request. UK buyers can source complete shaft assemblies or replacement yoke components from a single, consistent supplier — simplifying procurement and reducing lead times.
PTO Drive Shaft G Series
Heavy-duty series designed for high-torque agricultural implements including large balers, mowers, and disc harrows. Features reinforced tubes with overrun clutch options.
PTO Drive Shaft S Series
Standard series for mid-range implements. A versatile option for UK mixed farms running a variety of tractor-mounted attachments with regular seasonal changeovers.
PTO Drive Shaft L Series
Extended-length series for implements with greater offset requirements, such as flail mowers and pump units where PTO shaft length is a primary specification consideration.
PTO Drive Shaft T Series
Telescopic series for applications requiring variable-length drive lines. Particularly suited to front-mounted attachments and implements with significant three-point linkage movement.
Manufacturing & Custom Engineering Capability
Our production facility operates CNC spline-broaching lines, precision forging presses, and automated surface treatment equipment under an ISO 9001-accredited quality management system. Every Splined Yoke 01-Push Pin that leaves our plant has passed dimensional inspection against calibrated gauges, and traceability records are retained for each production batch. For UK machinery manufacturers, OEM customers, and agricultural engineering businesses with non-standard requirements, we offer a comprehensive custom splined yoke engineering service. This covers modifications to bore diameter, overall length (dimension C), yoke arm spread (dimension B), surface coating specification, and push-pin spring preload. We can accommodate development quantities from 50 pieces through to high-volume series production, with lead times discussed at quotation stage. If your operation requires a splined yoke that differs from our standard catalogue — whether due to a proprietary tractor interface, a non-standard implement gearbox, or an OEM branding requirement — our engineering team is available to review drawings and samples. Contact us directly to begin the specification conversation.
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edit by gzl | [email protected]
