{"id":3420,"date":"2026-06-26T03:55:53","date_gmt":"2026-06-26T03:55:53","guid":{"rendered":"https:\/\/www.pto-drive-shafts.com\/?post_type=product&p=3420"},"modified":"2026-06-26T05:35:24","modified_gmt":"2026-06-26T05:35:24","slug":"sd-double-joint","status":"publish","type":"product","link":"https:\/\/www.pto-drive-shafts.com\/kk\/%d3%a9%d0%bd%d1%96%d0%bc\/sd-double-joint\/","title":{"rendered":"SD-Double Joint"},"content":{"rendered":"
\n

<\/p>\n

\n
PTO Drive Shaft \u00b7 SD Series \u00b7 UK Supply<\/div>\n

SD-Double Joint PTO Drive Shaft \u2014 Precision Double-Cardan Engineering for UK Agriculture & Industry<\/h2>\n

The EP SD-Double Joint PTO drive shaft is engineered for applications demanding high angular articulation, smooth power transmission, and long service cycles. Designed and manufactured to exceed the expectations of British farmers, machinery dealers, and industrial OEM partners.<\/p>\n

Get a Quote<\/a>
\nContact Sales<\/a><\/p>\n<\/div>\n

\n

What Is a SD-Double Joint PTO Drive Shaft?<\/h2>\n

\"SD-DoubleThe SD-Double Joint PTO drive shaft is a purpose-built power transmission component featuring two Cardan universal joints positioned in a symmetric double-joint configuration. Unlike a standard single-joint shaft, the double-joint arrangement compensates for large operating angles \u2014 commonly reaching 80\u00b0 \u2014 by pairing two equal joints that cancel out each other’s velocity fluctuations. The result is a smooth, near-constant rotational output even when significant misalignment exists between the tractor PTO output and the implement input shaft.<\/p>\n

This design is particularly valued in British agriculture where compact farm layouts, tight headlands, and irregularly contoured land force tractors and attached implements to articulate at steeper angles than a conventional PTO shaft can reliably handle. From front-mounted mowers on mixed-use Welsh hill farms to wide-angle linkage requirements on East Anglian cereal operations, the SD-Double Joint PTO drive shaft delivers dependable torque transfer cycle after cycle, season after season, without the vibration fatigue that plagues lesser single-joint alternatives.<\/p>\n<\/div>\n

<\/p>\n

\n

Why UK Operators Choose the EP SD-Double Joint<\/h2>\n
\n
\n
\u2699\ufe0f<\/div>\n

Wide-Angle Articulation<\/h3>\n

Handles operating angles up to 80\u00b0, enabling full-lock turns and front-mounted implement use without shaft disengagement or vibration-induced wear.<\/p>\n<\/div>\n

\n
\ud83d\udd29<\/div>\n

Velocity-Equalised Output<\/h3>\n

The paired joint geometry mathematically cancels rotational irregularity, protecting gearboxes, couplings, and implement internals from cyclic torque spikes.<\/p>\n<\/div>\n

\n
\ud83d\udee1\ufe0f<\/div>\n

Robust Safety Guard<\/h3>\n

Full CE-compliant plastic safety guard with quick-release cone clamps, meeting UK PUWER 1998 and HSE PTO safety requirements for agricultural machinery.<\/p>\n<\/div>\n

\n
\ud83d\udcd0<\/div>\n

Multi-Series Compatibility<\/h3>\n

Available across Series 1 through 42, covering the full spectrum of tractor horsepower from compact 25 HP utility tractors to high-output 200+ HP row-crop machines.<\/p>\n<\/div>\n

\n
\ud83c\udfed<\/div>\n

Factory-Direct Value<\/h3>\n

Sourced direct from the EP manufacturing facility, eliminating distributor mark-ups and enabling competitive pricing for UK farm traders, dealers, and OEM buyers.<\/p>\n<\/div>\n

\n
\ud83d\udd04<\/div>\n

Long Maintenance Intervals<\/h3>\n

Sealed needle-roller cross kits with grease nipples for straightforward field re-lubrication, extending service life between overhauls compared with budget alternatives.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Materials, Construction & Operating Principle<\/h2>\n

The SD-Double Joint PTO drive shaft is constructed around a hardened alloy-steel cross kit (spider joint) pressed into precision-machined yoke arms. The cross kit is manufactured from 20CrMnTi case-hardened steel with a surface hardness of HRC 58\u201362, giving it the abrasion resistance needed to withstand heavy-load agricultural cycles across the British seasons. The outer profile tube \u2014 available in triangular, lemon, or star cross-section depending on the series \u2014 is cold-drawn from seamless carbon steel tubing and shot-blasted before coating in a high-adhesion epoxy primer topped with industrial yellow topcoat.<\/p>\n

The double-joint principle relies on phase geometry: the two Cardan joints are oriented so that the velocity error introduced by the first joint is precisely reversed by the second. When the joint centreline bisects the angle between the input and output shafts equally, the output shaft rotates at a constant velocity regardless of the operating angle. This is the same Rzeppa-adjacent geometry used in heavy-duty automotive driveline engineering, now applied to the demands of British mixed-use farming.<\/p>\n

The safety guard system uses flame-retardant HDPE moulded cones with a friction-fit retention system that stays locked under vibration but releases instantly for inspection. All metallic surfaces in the yoke-to-guard interface are zinc-chromate passivated to resist the corrosive combination of fertiliser spray, slurry, and the persistently damp UK climate \u2014 a longevity advantage that becomes apparent within the first two seasons of service.<\/p>\n<\/div>\n

<\/p>\n

\n

Technical Specifications<\/h2>\n

Complete dimensional data \u2014 SD-Double Joint series. All dimensions in millimetres.<\/p>\n

\n
\"SD-Double<\/div>\n<\/div>\n

<\/p>\n

SD-Double Joint \u2014 SDY Outer Yoke Dimensions<\/h3>\n

\"SD-Double<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0421\u0435\u0440\u0438\u044f\u043b\u0430\u0440<\/th>\nType<\/th>\nA (mm)<\/th>\nB (mm)<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\n1.05.SDY<\/td>\n102<\/td>\n102<\/td>\n<\/tr>\n
2<\/td>\n2.05.SDY<\/td>\n102<\/td>\n102<\/td>\n<\/tr>\n
3<\/td>\n3.05.SDY<\/td>\n124<\/td>\n102<\/td>\n<\/tr>\n
4<\/td>\n4.05.SDY<\/td>\n126<\/td>\n102<\/td>\n<\/tr>\n
5<\/td>\n5.05.SDY<\/td>\n134<\/td>\n102<\/td>\n<\/tr>\n
6<\/td>\n6.05.SDY<\/td>\n146<\/td>\n102<\/td>\n<\/tr>\n
7<\/td>\n7.05.SDY<\/td>\n168<\/td>\n102<\/td>\n<\/tr>\n
7N<\/td>\n7N.05.SDY<\/td>\n140<\/td>\n102<\/td>\n<\/tr>\n
8<\/td>\n8.05.SDY<\/td>\n168<\/td>\n102<\/td>\n<\/tr>\n
32<\/td>\n32.05.SDY<\/td>\n134<\/td>\n102<\/td>\n<\/tr>\n
36<\/td>\n36.05.SDY<\/td>\n154<\/td>\n102<\/td>\n<\/tr>\n
42<\/td>\n42.05.SDY<\/td>\n190<\/td>\n104<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

SD-Double Joint \u2014 DY Inner Yoke Dimensions<\/h3>\n

\"SD-Double<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
\u0421\u0435\u0440\u0438\u044f\u043b\u0430\u0440<\/th>\nType<\/th>\nA (mm)<\/th>\nB (mm)<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\n1.05.DY<\/td>\n66<\/td>\n72<\/td>\n<\/tr>\n
2<\/td>\n2.05.DY<\/td>\n69<\/td>\n78<\/td>\n<\/tr>\n
3<\/td>\n3.05.DY<\/td>\n79<\/td>\n80<\/td>\n<\/tr>\n
4<\/td>\n1310.05.DY<\/td>\n68.5<\/td>\n99<\/td>\n<\/tr>\n
5<\/td>\n100.05.DY<\/td>\n70<\/td>\n109<\/td>\n<\/tr>\n
6<\/td>\n25HP.05.DY<\/td>\n69<\/td>\n78<\/td>\n<\/tr>\n
7<\/td>\n50HP.05.DY<\/td>\n70<\/td>\n109<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Typical Applications Across UK Agriculture & Industry<\/h2>\n

The operating environment of a British farm is among the most demanding for PTO drive shafts anywhere in the world. Short field lengths mean frequent full-lock turns; heavy clay soils create unpredictable load spikes; autumn and winter operations keep shafts running in near-freezing, mud-saturated conditions for weeks at a stretch. The SD-Double Joint PTO drive shaft was built with exactly these constraints in mind, and it performs consistently whether fitted to a front-mounted hedge trimmer in the Scottish borders or a self-propelled sprayer attachment in the Lincolnshire Fens.<\/p>\n

\n
Front-Mounted Mowers<\/strong>
\nHigh-angle articulation essential for three-point front linkage grass mowers across UK dairy and sheep farms.<\/span><\/div>\n
Hedge Trimmers & Flail Mowers<\/strong>
\nSide-mounted and offset implements require constant-velocity output to prevent blade speed fluctuation.<\/span><\/div>\n
Slurry Tankers & Spreaders<\/strong>
\nHeavy PTO loads from slurry pump drives benefit from the double joint’s vibration-damping properties.<\/span><\/div>\n
Rotary Tillers & Cultivators<\/strong>
\nCompact horticultural tractors with low PTO heights require wide-angle shaft solutions for ground engagement implements.<\/span><\/div>\n
Industrial Conveyor Drives<\/strong>
\nAggregate quarrying, recycling plant, and food processing lines where angular misalignment is unavoidable in the drivetrain.<\/span><\/div>\n
<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

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

The SD-Double Joint is one component in a comprehensive PTO shaft programme. Depending on your torque, speed, and angle requirements, the following series may suit your application:<\/p>\n

\n
\n

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

General-purpose PTO shaft series designed for standard agricultural implements. Offers reliable torque transmission at 540 RPM and 1000 RPM rated speeds, with a wide range of yoke profiles and tube cross-sections available.<\/p>\n

View G Series \u2192<\/a><\/p>\n<\/div>\n

\n

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

Heavy-duty PTO shaft built for high-torque applications including large balers, forage harvesters, and industrial PTO pumps. Reinforced tube profiles and oversized cross kits support sustained high-load operation.<\/p>\n

View S Series \u2192<\/a><\/p>\n<\/div>\n

\n

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

Extended-length and light-duty PTO shaft series designed for compact tractor and horticultural applications, where low weight and minimum compressed length are critical packaging constraints.<\/p>\n

View L Series \u2192<\/a><\/p>\n<\/div>\n

\n

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

Telescoping PTO shaft with integrated torque limiter options \u2014 ideal for applications requiring overload protection, such as post-hole borers, stump grinders, and high-inertia rotary equipment.<\/p>\n

View T Series \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Customer Success: Pembrokeshire Dairy Farm, Wales<\/h2>\n
\n

\u049a\u0438\u044b\u043d\u0434\u044b\u049b:<\/strong> A 350-cow dairy operation in Pembrokeshire running a front-mounted mower and a rear slurry tanker was experiencing premature PTO shaft failures every eight to twelve months. The compact farm layout required tight turning circles at the headland, with the front-mounted mower shaft consistently operating near 70\u00b0 \u2014 well beyond the rated capacity of the standard shafts previously sourced from a local agricultural merchant.<\/p>\n

\u0428\u0435\u0448\u0456\u043c\u0456:<\/strong> The farm manager contacted EP via pto-drive-shafts.com and specified a Series 5 SD-Double Joint PTO drive shaft for the front mower circuit, with a custom compressed length of 580 mm to suit the specific tractor-mower geometry. EP’s engineering team confirmed the selection, provided dimensional drawings for approval within 48 hours, and despatched to a Haverfordwest freight depot within ten working days.<\/p>\n

\u041d\u04d9\u0442\u0438\u0436\u0435:<\/strong> After two full grass seasons and one silage campaign \u2014 approximately 1,400 operating hours \u2014 the SD-Double Joint shaft showed no measurable wear on the cross kit and the guard cones remained undamaged. The farm has since fitted SD-Double Joint shafts across three further implements and now orders direct annually, bypassing local dealer mark-ups.<\/p>\n

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

<\/p>\n

What UK Customers Say<\/h3>\n
\n
\n

“We’ve been running EP SD shafts on our front mower for two seasons now with zero issues. The angle range is genuinely impressive and the guard is far better quality than anything we’d had before. Will be ordering again before harvest.”<\/p>\n

\u2014 James H., Farm Contractor, North Yorkshire<\/strong><\/p>\n<\/div>\n

\n

“As an agricultural machinery dealer in the Midlands we stock a range of PTO shafts, but the EP SD-Double Joint has become our go-to recommendation for customers with front linkage equipment. Competitive price point, solid specs, and we’ve not had a warranty return yet.”<\/p>\n

\u2014 M. Sanderson, Agricultural Machinery Dealer, Staffordshire<\/strong><\/p>\n<\/div>\n

\n

“Our quarry conveyor drive needed a wide-angle shaft solution for a misaligned transfer point. The EP team suggested the Series 7 SD-Double Joint and provided a custom bore on the yoke within the standard lead time. Exactly what we needed at a fraction of the European OEM price.”<\/p>\n

\u2014 T. Aldridge, Plant Manager, Derbyshire Aggregate Processing<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Our Manufacturing Facility & Custom Capabilities<\/h2>\n

EP operates a vertically integrated PTO drive shaft manufacturing plant equipped with CNC forging lines, precision heat-treatment furnaces, coordinate measuring machines (CMM), and in-house cross-kit assembly. This end-to-end control means we can accommodate custom specifications \u2014 non-standard shaft lengths, specialised bore profiles, alternate guard colours, and OEM-branded packaging \u2014 without the extended lead times that outsourced production inevitably introduces. Our design engineers work directly with UK OEM clients and farm machinery integrators to develop application-specific configurations, and our production flexibility allows minimum order quantities far lower than competing European manufacturers.<\/p>\n

\n
\"EP<\/div>\n<\/div>\n
\n
Custom Bore Profiles<\/strong>
\n1-3\/8″ 6-spline, 1-3\/4″ 20-spline, metric keyed bores, and non-standard profiles on request.<\/span><\/div>\n
Custom Lengths<\/strong>
\nCompressed and extended lengths tailored to specific tractor-implement geometry from the UK.<\/span><\/div>\n
OEM Branding<\/strong>
\nPrivate-label guard colours, printed packaging, and branded cross-kit bags available for dealers and OEMs.<\/span><\/div>\n
Low MOQ<\/strong>
\nMixed-series orders accepted; small UK farm dealers can order cost-effectively without large stock commitment.<\/span><\/div>\n<\/div>\n

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

<\/p>\n

\n

\u0416\u0438\u0456 \u049b\u043e\u0439\u044b\u043b\u0430\u0442\u044b\u043d \u0441\u04b1\u0440\u0430\u049b\u0442\u0430\u0440<\/h2>\n
\n
\n
\nWhat is the maximum operating angle of an SD-Double Joint PTO drive shaft suitable for UK front-mounted mowers? +<\/span><\/summary>\n
\n

The SD-Double Joint PTO drive shaft is rated for operating angles up to 80\u00b0, which comfortably covers the articulation demands of front-mounted mowers commonly used on UK farms. Standard single-joint shafts are typically limited to 25\u201335\u00b0, making the SD-Double Joint the correct choice whenever the implement geometry regularly requires angles above 40\u00b0.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nHow much does an SD-Double Joint PTO shaft cost and can I get a price quote for delivery to England? +<\/span><\/summary>\n
\n

Pricing for SD-Double Joint PTO drive shafts depends on the series (1 through 42), bore configuration, and custom requirements such as non-standard lengths. To receive a price and freight quote with delivery to any UK address \u2014 England, Scotland, Wales, or Northern Ireland \u2014 please email sales@pto-drive-shafts.com with your series number, required bore profile, and compressed\/extended length. Our team responds within 24 business hours.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nWhich series of SD-Double Joint PTO shaft do I need for a 100 HP tractor used in arable farming in East Anglia? +<\/span><\/summary>\n
\n

For a 100 HP tractor in arable service, Series 5 or Series 6 SD-Double Joint PTO shafts are typically the appropriate selection, depending on the specific implement input shaft dimensions and PTO speed (540 or 1000 RPM). Series 5 suits most mid-range implements such as cultivators and power harrows, while Series 6 is preferred for higher-torque applications like large rotary mowers and strip-till drills. If in doubt, send us your tractor make, model, and implement details and we will confirm the correct series.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nWhere can I find a reliable SD-Double Joint PTO drive shaft supplier in the UK that offers custom bore options? +<\/span><\/summary>\n
\n

EP, trading through pto-drive-shafts.com, supplies SD-Double Joint PTO drive shafts direct to UK buyers with full custom bore capability \u2014 covering standard 1-3\/8″ 6-spline, 1-3\/4″ 20-spline, metric keyed, and non-standard profiles. Orders ship internationally with documentation suitable for UK import, and the factory technical team provides dimensional drawings and application confirmation prior to order placement.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nHow often should I grease and maintain an SD-Double Joint PTO shaft used in Scottish hill farm conditions? +<\/span><\/summary>\n
\n

In high-moisture, high-angle operating environments such as Scottish hill farms, we recommend greasing the SD-Double Joint cross kits every 8 operating hours or weekly during intensive seasonal use, whichever is sooner. Use an EP2 lithium-complex or EP2 NLGI grease through each cross-kit nipple until fresh grease purges from the needle-roller seal. Inspect guard fixings and the sliding tube for debris ingress after each muddy working day to prevent premature wear.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

\n
\nWhat is the difference between an SD-Double Joint PTO shaft and a standard Cardan PTO shaft for a UK agricultural dealer looking to stock the right product? +<\/span><\/summary>\n
\n

A standard Cardan (single universal joint) PTO shaft transmits torque through one pivot, which introduces a velocity fluctuation \u2014 proportional to the sine of the operating angle \u2014 that causes vibration and wear at angles above roughly 30\u00b0. The SD-Double Joint uses two Cardan joints configured so their angular errors cancel, producing a near-constant-velocity output at angles up to 80\u00b0. For UK dealers, stocking both types is advisable: standard shafts for rear-mounted implements at low angles, SD-Double Joints for front-mounted, side-mounted, or high-articulation rear applications.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Ready to Source SD-Double Joint PTO Shafts for Your UK Operation?<\/h2>\n

Send your specification to our sales team \u2014 series number, bore profile, compressed length, and quantity \u2014 and we will return a detailed quote with technical drawing confirmation within 24 hours.<\/p>\n

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

gzl \u0430\u0440\u049b\u044b\u043b\u044b \u04e9\u04a3\u0434\u0435\u0443<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

SD-Double Joint PTO Drive Shaft \u2014 dual Cardan design, 80\u00b0 articulation, 20CrMnTi hardened steel, Series 1\u201342, CE guard. UK supply, custom bore & length available.<\/p>","protected":false},"featured_media":3437,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1800],"product_tag":[],"class_list":["post-3420","product","type-product","status-publish","has-post-thumbnail","product_cat-torque-limiter","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/product\/3420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/comments?post=3420"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/media\/3437"}],"wp:attachment":[{"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/media?parent=3420"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/product_brand?post=3420"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/product_cat?post=3420"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/kk\/wp-json\/wp\/v2\/product_tag?post=3420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}