PTO Shaft for Jaylor Vertical TMR Feed Mixers Single Auger, Twin Auger and Total Mix

Unidirectional Power Transfer

Motion transmits in a single rotational direction when the tractor PTO is engaged and driving the implement. The shaft efficiently channels engine torque into the mixer auger without loss or vibration under normal operating conditions.

Inertia Disconnect on Stop

During the stopping phase, once the tractor PTO disengages, the transmission disconnects cleanly. This protects both the tractor gearbox and the mixer drivetrain from the backward shock that high-inertia loads create when spinning down.

Constant Velocity Option

Jaylor equipment supports both standard PTO shafts and constant velocity (CV) configurations. CV shafts are strongly recommended where the operating angle between tractor and mixer regularly exceeds 15°, eliminating the cyclic torque fluctuations that accelerate wear in universal joints.

🔗 Internal Yoke

Two units — one at each end of the shaft. The internal yoke is welded to the drive tube and connects to the universal joint, forming the primary structural backbone of the assembly.

🔄 Universal Joint

Two cross-joints accommodate angular misalignment between the tractor and mixer. Needle-bearing kits are available as separate service items for field replacement without changing the full shaft.

🔗 External Yoke

The Y-shaped yoke with female bore connects to the tractor stub or implement input shaft. Shear-bolt models incorporate a sacrificial bolt that fails before the drivetrain does, while quick-disconnect versions allow fast coupling and decoupling.

🔒 Safety Chains & Shield

Cone shields at both ends prevent entanglement contact while safety chains anchor the spinning guard to fixed points on both tractor and implement. These are non-negotiable safety items under UK Health and Safety Executive guidance for PTO-driven machinery.

A 320-cow Holstein operation in North Yorkshire had experienced three PTO shaft failures in 14 months on their Jaylor 4350 twin-auger mixer, all attributed to undersized shear bolt yokes from a domestic agricultural merchant. The farm manager contacted us after a Google search for a UK PTO shaft supplier with direct Jaylor compatibility data. We supplied a matched pair of Size 8 S8 shafts with 1.375″-21 spline LB yokes (part 6060M3702R) rated to 3800 Nm. The farm reported zero failures in the following 18 months of twice-daily TMR mixing across a 560-cow extended herd. Downtime cost in the previous period had exceeded GBP 4,200 in emergency service calls and lost milk yield. The replacement shafts paid for themselves within the first season.

🏭 In-House Production

Our manufacturing facility operates CNC spline milling, precision tube drawing, and heat-treatment lines dedicated to agricultural PTO shafts. All critical dimensions are verified against master gauges before despatch. We hold stock of the most common Jaylor-compatible sizes for same-week UK shipping.

⚙ Bespoke Customisation

Non-standard shaft lengths, modified yoke bore diameters, custom shear-bolt torque settings, and OEM-brand labelling are all available as paid customisation services. Minimum order quantities for custom shafts start at 10 units, with engineering sign-off included in the quoted price. We routinely support UK machinery dealers, OEM assemblers, and specialist agricultural contractors with bespoke specifications.

Get a Quote →

For a 75 HP tractor, you require a Category 5 / Series 8 (S8) shaft. The correct spline depends on your tractor’s PTO stub: most 75 HP UK tractors ship with a 1.375″-21 spline output, which maps to part number 6060M3702R (LB yoke, 3800 Nm rated). Always measure from yoke outer face to yoke outer face at the closed position before ordering to confirm tube length.

Pricing varies by series size, yoke model, and shaft length. Standard S6 shafts are significantly less expensive than S8 or CV configurations. The fastest route to an accurate cost is to email [email protected] with your tractor HP, PTO spline count, and approximate shaft length. We typically respond with a formal quote within one business day for UK enquiries.

We hold UK-ready stock of the most common Jaylor CV shaft configurations and can arrange fast despatch for confirmed orders. Delivery lead times to mainland England, Scotland, and Wales are typically 3–5 working days for stocked items. Express freight options are available for urgent requests during calving or peak feeding seasons — contact us directly to confirm availability for your specific configuration.

Inspection before the winter housing period (typically October in the UK) is the practical recommendation. Key warning signs that justify immediate replacement include: excessive play in the yoke bores, cracked or missing shield cones, corrosion pitting on the telescoping tube, stiff or rough universal joint articulation, and any visible deformation of the shear bolt area. Proactive replacement costs a fraction of the emergency call-out and lost production that a mid-winter failure causes.

A shear bolt yoke uses a sacrificial bolt (M10 or M12 grade 8.8) that fractures at a calibrated torque threshold — typically 2500–3800 Nm for Jaylor applications — disconnecting the drive instantaneously on overload. A friction torque limiter allows continuous slip above a set threshold without any part failure, and re-engages automatically once the overload clears. Shear bolt systems are lower cost but require field replacement of the bolt after each event; friction limiters suit higher-frequency overload environments such as mixers regularly processing compacted root crops.

We supply directly to farms, machinery dealers, and agricultural contractors across England, Scotland, Wales, and Northern Ireland. Our B2B pricing tier is available for trade accounts placing repeat orders. To set up a trade account or request a multi-unit price list for Jaylor-compatible PTO shafts, contact us at [email protected].