{"id":3328,"date":"2026-06-23T06:02:17","date_gmt":"2026-06-23T06:02:17","guid":{"rendered":"https:\/\/www.pto-drive-shafts.com\/?post_type=product&p=3328"},"modified":"2026-06-23T08:03:23","modified_gmt":"2026-06-23T08:03:23","slug":"splined-yoke-03-non-interfering-bolt","status":"publish","type":"product","link":"https:\/\/www.pto-drive-shafts.com\/nl\/product\/splined-yoke-03-non-interfering-bolt\/","title":{"rendered":"Splined Yoke 03-Non-Interfering Bolt"},"content":{"rendered":"
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PTO Drive Shafts \u2014 Industrial Component Series<\/p>\n

Splined Yoke 03 \u2014 Non-Interfering Bolt<\/h2>\n

Precision-engineered for UK agricultural and industrial machinery, the Splined Yoke 03 Non-Interfering Bolt delivers consistent torque transfer, reduced maintenance downtime, and superior fatigue resistance across the widest range of PTO drive shaft configurations on the market today.<\/p>\n

\ud83d\udce7 Request a Quote<\/a><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

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What Makes the Splined Yoke 03 Different?<\/h2>\n

\"SplinedThe Splined Yoke 03 Non-Interfering Bolt is a purpose-designed yoke component used at the implement end of PTO drive shafts throughout the UK farming and light industrial sectors. Its defining feature is the non-interfering bolt geometry, which positions the clamping hardware so it never contacts the rotating tube or guard during operation. This single engineering decision eliminates one of the most common causes of PTO shaft failure on British farms \u2014 fastener contact wear during high-speed rotation under load.<\/p>\n

Manufactured from high-grade carbon steel with controlled case hardening, each splined yoke in this series is dimensionally verified to interlock with standard 1 3\/8″ Z6, 1 3\/8″ Z21, 1 3\/4″ Z6, and 1 3\/4″ Z20 spline profiles. The result is a component that seats firmly without rocking, distributes clamping load uniformly around the bore, and maintains that grip even after hundreds of engagement cycles across a UK growing season. Whether fitted to a baler, a flail mower, a slurry pump, or a hedge cutter, the 03-series yoke delivers predictable, safe power transfer at every PTO connection point.<\/p>\n

British contractors and agricultural machinery dealers increasingly specify this component because replacement is straightforward, the dimensional range covers virtually every tractor model in common use across England, Scotland, Wales, and Northern Ireland, and the non-interfering bolt design reduces the risk of a guard contact fault that could otherwise trigger a costly machinery safety inspection.<\/p>\n<\/div>\n

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Engineering Advantages<\/h2>\n
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\n
\u2699<\/div>\n

Non-Interfering Bolt Design<\/h3>\n

The fastener sits fully recessed and clear of the rotating tube, eliminating contact wear that degrades both the guard and the clamping bolt itself during high-RPM operation.<\/p>\n<\/div>\n

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\ud83d\udd28<\/div>\n

Case-Hardened Carbon Steel<\/h3>\n

A controlled heat treatment process gives the splined bore a hard outer surface while preserving a tough core, balancing abrasion resistance with impact resilience through the full service life.<\/p>\n<\/div>\n

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\ud83d\udcc8<\/div>\n

Wide Dimensional Range<\/h3>\n

Sixteen series variants cover bore diameters from 22 mm to 36 mm and four standard spline profiles, making it straightforward to source the exact replacement for virtually any tractor or implement in the UK fleet.<\/p>\n<\/div>\n

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\ud83d\udee0<\/div>\n

Quick-Change Field Replacement<\/h3>\n

The non-interfering bolt can be loosened and retightened with a standard spanner without removing the guard, cutting field changeover time dramatically during busy harvesting or cultivation windows.<\/p>\n<\/div>\n

\n
\u2615<\/div>\n

Corrosion-Resistant Finish<\/h3>\n

A phosphate-and-oil or zinc-plated surface treatment provides baseline protection against the damp outdoor conditions common across UK farms, extending the serviceable life between scheduled inspections.<\/p>\n<\/div>\n

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\ud83c\udf0d<\/div>\n

Cross-Brand Compatibility<\/h3>\n

Dimensional compliance with ISO 500 and ASAE S201 spline standards means the 03-series yoke fits John Deere, Fendt, New Holland, Claas, and Massey Ferguson tractor PTO stubs without modification.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Technical Specifications<\/h2>\n

The table below lists every series variant available for the Splined Yoke 03 Non-Interfering Bolt. Dimensions A through E are in millimetres; column F identifies the spline profile. B-suffix series use a 1 3\/8″ Z6 spline; D-suffix use 1 3\/8″ Z21; C-suffix use 1 3\/4″ Z6; E-suffix use 1 3\/4″ Z20. When ordering, confirm both the series number and the letter suffix to ensure the correct spline engagement with your tractor or implement stub shaft.<\/p>\n

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\"Splined<\/p>\n

Technical drawing \u2014 Splined Yoke 03 Non-Interfering Bolt (dimensions in mm)<\/p>\n<\/div>\n

<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Serie<\/th>\nA (mm)<\/th>\nB (mm)<\/th>\nC (mm)<\/th>\nD (mm)<\/th>\nE (mm)<\/th>\nF (Spline)<\/th>\n<\/tr>\n<\/thead>\n
1.0503B<\/td>\n22<\/td>\n54<\/td>\n93<\/td>\n23<\/td>\n23.5<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
1.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
2.0503B<\/td>\n23.8<\/td>\n61.3<\/td>\n102<\/td>\n21<\/td>\n23.5<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
2.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
3.0503B<\/td>\n27<\/td>\n70<\/td>\n108<\/td>\n21<\/td>\n23.5<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
3.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
4.0503B<\/td>\n27<\/td>\n74.6<\/td>\n108<\/td>\n21<\/td>\n23.5<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
4.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
5.0503B<\/td>\n30.2<\/td>\n80<\/td>\n108<\/td>\n21<\/td>\n25<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
5.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
32.0503B<\/td>\n32<\/td>\n76<\/td>\n108<\/td>\n21<\/td>\n25<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
32.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
6.0503B<\/td>\n30.2<\/td>\n92<\/td>\n118<\/td>\n23<\/td>\n25<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
6.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
7.0503B<\/td>\n30.2<\/td>\n106.5<\/td>\n130<\/td>\n25<\/td>\n25<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
7.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
7N.0503B<\/td>\n35<\/td>\n94<\/td>\n122<\/td>\n21<\/td>\n25<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
7N.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
8.0503B<\/td>\n35<\/td>\n106.5<\/td>\n130<\/td>\n25<\/td>\n25<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
8.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n
8.0503C<\/td>\n130<\/td>\n30<\/td>\n1 3\/4″ Z6<\/td>\n<\/tr>\n
8.0503E<\/td>\n1 3\/4″ Z20<\/td>\n<\/tr>\n
36.0503B<\/td>\n36<\/td>\n89<\/td>\n122<\/td>\n21<\/td>\n25<\/td>\n1 3\/8″ Z6<\/td>\n<\/tr>\n
36.0503D<\/td>\n1 3\/8″ Z21<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

<\/p>\n

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How It Works \u2014 Materials and Operating Principle<\/h2>\n
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Power Transfer Mechanism<\/h3>\n

The splined bore of the yoke engages directly with the male spline on the tractor or implement stub shaft. Torque is shared across every spline tooth simultaneously, distributing the load far more evenly than a keyed connection. The clamping bolt then closes the split in the yoke bore, generating a controlled interference between the yoke and the shaft that resists axial pullout under the cyclic loads of field operation. Because the bolt head sits recessed in a pocket machined into the yoke flange, it never reaches the rotating guard or the inner tube wall, so the guard remains undamaged and the bolt itself is not subjected to the bending fatigue that plagues conventional bolt-through designs on UK farm PTO shafts.<\/p>\n<\/div>\n

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Material and Surface Treatment<\/h3>\n

The yoke body is forged from 20CrMnTi or equivalent medium-carbon alloy steel, which offers a tensile strength in the range of 880 MPa to 1,180 MPa depending on section thickness. After machining to final dimension, the splined bore is induction hardened to a case depth of approximately 0.8 mm to 1.2 mm, raising surface hardness to 58 to 62 HRC while the core retains sufficient toughness to absorb shock loads from sudden implement engagement or field obstructions. The external surfaces receive a phosphate conversion coat followed by an oil dip, providing corrosion resistance suitable for the outdoor storage and wet-field conditions that are routine on British arable, dairy, and livestock farms throughout the year.<\/p>\n<\/div>\n<\/div>\n

\"PTO<\/p>\n<\/div>\n

<\/p>\n

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Where the Splined Yoke 03 Is Used<\/h2>\n

The 03-series splined yoke is a genuinely versatile component. Its dimensional range and four spline profiles mean it appears in a wide cross-section of machinery that UK operators run every day, from intensive arable units in Lincolnshire and the East Midlands to upland livestock farms in Wales and the Scottish Borders. Understanding the application environments helps buyers select the right series for their specific load and speed requirements.<\/p>\n

\n
\n
\ud83c\udf3f<\/div>\n

Grass & Forage Machinery<\/h4>\n

Mowers, tedders, rakes, and wrappers that run continuously for extended periods during silage and hay seasons across UK grassland farms.<\/p>\n<\/div>\n

\n
\ud83c\udf3e<\/div>\n

Arable Tillage Equipment<\/h4>\n

Rotary tillers, power harrows, and stone buriers where high torque at low speed places substantial stress on the PTO drive shaft yoke connection.<\/p>\n<\/div>\n

\n
\ud83d\udea2<\/div>\n

Slurry & Irrigation Pumps<\/h4>\n

Dairy and livestock operations where pump PTO drives run for many hours and the yoke must maintain clamp force without fretting under sustained rotational load.<\/p>\n<\/div>\n

\n
\u26fa<\/div>\n

Hedge & Verge Cutters<\/h4>\n

Flail and disc cutters on county council and estate maintenance operations, where sudden impact loads from unseen obstructions test yoke integrity repeatedly throughout the cutting season.<\/p>\n<\/div>\n

\n
\u26be<\/div>\n

Light Industrial Drives<\/h4>\n

Log splitters, air compressors, and small generators powered by tractor PTO on UK rural estates and smallholdings where a reliable, low-maintenance yoke connection is essential.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Complete PTO Drive Shaft Range<\/h2>\n

The Splined Yoke 03 Non-Interfering Bolt is designed to work as part of a complete PTO drive shaft assembly. Our four main series cover the full spectrum of UK agricultural and industrial PTO applications, from light garden-tractor implements to heavy-duty commercial cultivation equipment.<\/p>\n

\n
\n

PTO Drive Shaft G Series<\/a><\/h3>\n

A general-purpose series suited to standard agricultural implements, offering a balanced combination of torque capacity, articulation angle, and competitive pricing for everyday UK farm use.<\/p>\n<\/div>\n

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PTO Drive Shaft S Series<\/a><\/h3>\n

Engineered for slip-clutch protection applications, the S Series integrates torque-limiting functionality ideal for mowers and balers where sudden load spikes are common during UK harvesting operations.<\/p>\n<\/div>\n

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PTO Drive Shaft L Series<\/a><\/h3>\n

The L Series addresses long-wheelbase tractor-implement configurations, providing extended telescopic travel and wide-angle joint options for machinery working on undulating British terrain.<\/p>\n<\/div>\n

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PTO Drive Shaft T Series<\/a><\/h3>\n

Heavy-duty T Series shafts are built for high-torque applications such as large rotary tillers and commercial spreaders, with robust cross-and-bearing kits rated for the most demanding cultivation schedules.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Customer Success: Yorkshire Arable Contractor<\/h2>\n
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Client: Thornfield Agricultural Services, East Yorkshire<\/p>\n

Industry: Arable contracting | Application: Power harrow PTO drive shafts | Fleet: 6 John Deere and Fendt tractors<\/p>\n

Thornfield Agricultural Services operates on some of the most productive arable land in the UK, running power harrows and combination drill-harrow units across more than 4,000 hectares each spring and autumn. Their fleet had been experiencing repeated yoke clamp failure on two of their six tractors, traced back to conventional bolt-through yokes where the fastener was contacting the guard at speed, loosening progressively and allowing the yoke bore<\/a> to rock on the stub shaft splines. Each failure meant an unplanned workshop visit during a tight cultivation window.<\/p>\n

After switching the affected machines to the Splined Yoke 03 Non-Interfering Bolt across series 5.0503B and 7.0503B, Thornfield completed a full spring drilling campaign without a single yoke-related stoppage. Their workshop manager noted that the non-interfering bolt pocket prevented any fastener-to-guard contact throughout the season, and the clamp torque remained consistent even after multiple engagements per day over eight weeks of continuous operation.<\/p>\n

“We run our harrows hard from March through May. Since we moved to these yokes we have not had a single bolt work loose. The non-interfering design is a straightforward solution to a problem that was costing us real money every season.” \u2014 Workshop Manager, Thornfield Agricultural Services<\/p>\n

\"PTO<\/p>\n<\/div>\n

<\/p>\n

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“Ordered sixteen yokes for our mower fleet in Shropshire. Fitment was straightforward and the dimensional accuracy was exactly what we needed for our New Holland T7 stubs. No issues across two full silage seasons.”<\/p>\n

D. Hartley \u2014 Farm Manager, Shropshire<\/p>\n<\/div>\n

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“We source PTO components for resale to machinery dealers across the North of England. The 03 series yokes have become one of our fastest-moving SKUs. Lead time and packaging quality both meet professional trade expectations.”<\/p>\n

S. Brownlee \u2014 Parts Buyer, Agricultural Machinery Distributor, Leeds<\/p>\n<\/div>\n

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“Used the 8.0503C variant on a 1 3\/4″ Z6 stub on our large-diameter slurry pump. The spline engagement felt solid from the first engagement. After a full winter spreading programme, there was no visible wear on the bore or the shaft. Very satisfied.”<\/p>\n

R. Maguire \u2014 Livestock Farmer, County Down, Northern Ireland<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Manufacturing Capability & Custom Orders<\/h2>\n
\n
\n

Our manufacturing facility operates closed-loop quality control from forging through final inspection, giving us the process stability to hold bore concentricity within 0.02 mm and spline tooth profile to DIN 5480 tolerances across every production batch. Cold forging presses, CNC hobbing machines, and automated heat treatment lines allow the facility to scale output for both small specialist orders and high-volume OEM supply contracts serving UK machinery manufacturers and European agricultural equipment brands.<\/p>\n

Importantly, the facility carries genuine customisation capability for buyers who need dimensions outside the standard 03-series range. Non-standard bore diameters, alternative spline profiles (including metric DIN splines and proprietary OEM profiles), special surface treatments such as hot-dip galvanising for coastal UK environments, and modified bolt pocket geometries can all be accommodated. Minimum order quantities for custom variants are negotiable, and our engineering team will work from customer drawings, sample parts, or a dimensional specification sheet. Contact us with your requirements and we will provide a detailed technical and commercial response within two working days.<\/p>\n<\/div>\n

\n

\"PTO<\/h3>\n

Request a Custom Quote<\/h3>\n

Send your drawing, sample reference, or dimensional requirements. We respond within two business days with a full technical and pricing proposal.<\/p>\n

Get a Quote<\/a><\/p>\n

sales@pto-drive-shafts.com<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Veelgestelde vragen<\/h2>\n
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What is a non-interfering bolt on a PTO splined yoke and why does it matter for UK farm machinery?<\/p>\n<\/div>\n

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A non-interfering bolt sits fully within a machined pocket in the yoke flange so it cannot contact the rotating guard tube or the inner telescopic tube during operation. On conventional designs, the bolt head protrudes into the guard clearance zone, and at high PTO speeds this contact abrades both the guard and the fastener, eventually loosening the clamp and allowing the yoke bore to rock on the spline teeth. For UK farm operators running harrows, mowers, or balers for extended daily hours, this design difference directly reduces unplanned downtime and extends the service interval between yoke inspections.<\/p>\n<\/div>\n<\/div>\n

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Which series of the Splined Yoke 03 Non-Interfering Bolt should I order for my John Deere 6R tractor with a 1 3\/8 inch Z6 PTO stub in England?<\/p>\n<\/div>\n

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The John Deere 6R uses a standard 1 3\/8″ Z6 spline profile. Any B-suffix series in our 03 range will match that stub. The correct series number depends on the outer diameter of your implement input shaft and the required yoke flange width. For most mid-range implements on a 6R, the 5.0503B or 6.0503B covers the typical A dimension of 30.2 mm. If you send us your implement make and model along with the A and C dimensions from the worn yoke, we can confirm the correct variant within the same working day.<\/p>\n<\/div>\n<\/div>\n

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How much does a replacement Splined Yoke 03 Non-Interfering Bolt cost and what is the typical price for a trade order of ten or more units supplied to an agricultural machinery dealer in the UK?<\/p>\n<\/div>\n

\n

Pricing depends on series, surface treatment, and order quantity. Standard B and D suffix variants in quantities of one to nine units are priced individually; trade and dealer orders of ten units or more attract a volume discount that our sales team will confirm in writing. For a formal quote including shipping to any postcode in England, Scotland, Wales, or Northern Ireland, please email sales@pto-drive-shafts.com with your series reference and required quantity. We aim to issue a full commercial proposal within two business days.<\/p>\n<\/div>\n<\/div>\n

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Where can I find a reliable supplier of PTO splined yoke components who can deliver quickly to agricultural machinery workshops across the North of England and Scotland?<\/p>\n<\/div>\n

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pto-drive-shafts.com supplies PTO splined yoke components and complete drive shaft assemblies directly to agricultural machinery workshops, farm shops, and independent dealers throughout the United Kingdom. Standard series variants are held in stock and can be dispatched within two to three working days for delivery to workshops in Yorkshire, the North East, Cumbria, Scotland, and all other UK regions. For urgent seasonal requirements, contact our sales team to discuss priority despatch options.<\/p>\n<\/div>\n<\/div>\n

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Can I get a custom-dimension Splined Yoke 03 made with a 1 3\/4 inch Z20 spline to fit a large European implement on my Fendt 942 running on an arable farm in Lincolnshire?<\/p>\n<\/div>\n

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Yes. The 8.0503E is our standard 1 3\/4″ Z20 variant with a 35 mm A dimension and a 130 mm C length, which covers the majority of large-implement stubs on tractors in the 200 hp-plus bracket including the Fendt 942. If your implement requires a different flange geometry or a non-standard bore size beyond the 36 mm maximum in our range, our engineering team can produce a custom variant from your drawing or a sample part. Send your requirements to sales@pto-drive-shafts.com and we will advise on feasibility, lead time, and minimum order quantity.<\/p>\n<\/div>\n<\/div>\n

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How do I correctly measure my worn PTO yoke to identify which replacement series to order from a UK supplier?<\/p>\n<\/div>\n

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You need five measurements: A is the bore inner diameter in mm; B is the distance from the bore centreline to the outer face of the yoke body; C is the total yoke length; D is the flange wall thickness; and E is the bolt pitch circle diameter across the clamping bore. Compare these against our dimensional table above. Also count the spline teeth on the stub shaft to confirm the Z number, and measure the stub diameter to confirm 1 3\/8″ (34.9 mm) or 1 3\/4″ (44.4 mm). If any dimension falls between two series, send us photographs of the old yoke alongside a ruler and we will advise on the correct replacement before you place your order.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Ready to Order or Need Technical Advice?<\/h2>\n

Our engineering team is available to help UK buyers select the correct Splined Yoke 03 variant, confirm compatibility with your specific tractor and implement combination, and provide a competitive trade price for single or bulk orders.<\/p>\n

\ud83d\udce7 Get a Quote \u2014 sales@pto-drive-shafts.com<\/a><\/p>\n<\/div>\n

bewerkt door gzl<\/p>","protected":false},"excerpt":{"rendered":"

Splined Yoke 03 Non-Interfering Bolt \u2014 case-hardened steel PTO yoke, 16 series, 1 3\/8″ & 1 3\/4″ spline profiles, recessed bolt design prevents guard contact wear.<\/p>","protected":false},"featured_media":3320,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1799],"product_tag":[],"class_list":["post-3328","product","type-product","status-publish","has-post-thumbnail","product_cat-yoke","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/product\/3328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/comments?post=3328"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/media\/3320"}],"wp:attachment":[{"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/media?parent=3328"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/product_brand?post=3328"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/product_cat?post=3328"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/nl\/wp-json\/wp\/v2\/product_tag?post=3328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}