{"id":3453,"date":"2026-06-29T02:52:09","date_gmt":"2026-06-29T02:52:09","guid":{"rendered":"https:\/\/www.pto-drive-shafts.com\/?post_type=product&p=3453"},"modified":"2026-06-29T03:54:37","modified_gmt":"2026-06-29T03:54:37","slug":"pb-s16-8d-40-universal-coupling","status":"publish","type":"product","link":"https:\/\/www.pto-drive-shafts.com\/id\/produk\/pb-s16-8d-40-universal-coupling\/","title":{"rendered":"PB-S16-8D-40 Universal Coupling"},"content":{"rendered":"

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Universal Coupling | UK B2B Industrial Supply<\/div>\n

PB-S16-8D-40
Universal Coupling<\/span><\/h2>\n

Precision-engineered universal coupling for agricultural PTO drive shafts, industrial gearboxes, and heavy-duty power transmission across the United Kingdom. Built for performance in demanding field and factory conditions.<\/p>\n

\ud83d\udcb3 Get a Quote Now<\/a><\/p>\n<\/div>\n<\/div>\n

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\"Universal<\/p>\n

PB-S16-8D-40 Universal Coupling \u2014 Available for UK agricultural and industrial applications<\/p>\n<\/div>\n

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Ready to order or need a technical quotation for your project?<\/span>
\nRequest a Quote \u2192<\/a><\/div>\n

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What Is the PB-S16-8D-40 Universal Coupling?<\/h2>\n

\"PB-S16-8D-40The PB-S16-8D-40 universal coupling is a compact, high-precision mechanical connector designed to transmit rotary motion between two shafts that are not in perfect alignment. With a shaft bore diameter of 8 mm (D h7), an overall length of 40 mm (L), and a series designation of PB-S16, this component is engineered to accommodate angular misalignment, axial movement, and parallel offset \u2014 the three conditions that routinely arise in real-world agricultural and industrial drive lines throughout the United Kingdom.<\/p>\n

Unlike rigid couplings that transfer shock loads directly to connected machinery, the universal coupling absorbs torsional vibration and distributes torque evenly across its cross-journal assembly. This makes the PB-S16-8D-40 particularly well-suited for tractor PTO connections, combine harvester drive lines, hydraulic pump drives, and small industrial gearbox outputs where misalignment is unavoidable and shock loading is routine. British farms operating heavy groundwork attachments and UK food processing plants running continuous shift patterns alike have come to depend on this design for reliable, low-maintenance performance.<\/p>\n

The coupling body is manufactured from case-hardened alloy steel with ground bearing journals, ensuring the dimensional tolerances required for smooth, vibration-free rotation under sustained power take-off loads. The keyway dimensions (K js9: 2 mm, S h8: 8 mm, Sw h8: 8 mm) are precision-broached to standard fits, enabling direct assembly onto standard PTO stub shafts and driven machine shafts without the need for custom machining in the field.<\/p>\n<\/div>\n

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Key Advantages of the PB-S16-8D-40<\/h2>\n
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Precision Ground Tolerances<\/h3>\n

D(h7) and S(h8) fits ground to ISO standards, ensuring interference-free assembly and minimal backlash even at sustained operational speeds above 1,000 rpm.<\/p>\n<\/div>\n

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\ud83d\uded2<\/div>\n

Angular Misalignment Compensation<\/h3>\n

The cross-journal design accommodates angular misalignment, reducing bearing stress on connected machinery \u2014 a critical benefit for UK tractors operating on undulating arable land.<\/p>\n<\/div>\n

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Alloy Steel Construction<\/h3>\n

Case-hardened alloy steel body and needle roller bearing journals deliver tensile strength and wear resistance needed for 2,000+ hour annual operating cycles in agricultural machinery.<\/p>\n<\/div>\n

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Wide Series Range<\/h3>\n

Available from PB-S13 through PB-S95, the series covers bore diameters from 6 mm to 50 mm, letting engineers select the precise size for light workshop drives or heavy field machinery.<\/p>\n<\/div>\n

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Minimal Maintenance Requirements<\/h3>\n

Grease-nipple-equipped bearing cups allow scheduled lubrication without disassembly, extending service intervals and reducing downtime during peak harvest and cultivation seasons.<\/p>\n<\/div>\n

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\ud83c\udf4e<\/div>\n

Custom Bore & Keyway Options<\/h3>\n

Bore and keyway dimensions can be produced to customer specification, supporting OEM programmes and replacement part projects across British farm machinery dealers and industrial distributors.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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How the Universal Coupling Works \u2014 Principle, Materials & Applications<\/h2>\n

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Working Principle<\/h3>\n

The PB-S16-8D-40 operates on the Hooke’s joint (Cardan joint) principle. Two yoke forks, one on each shaft, are connected via a cross-shaped trunnion journal. As one shaft rotates, the cross journal transmits torque through needle roller bearing cups seated in each yoke bore. The geometry allows the driven shaft to rotate even when angled relative to the driving shaft \u2014 up to the design’s maximum permissible misalignment angle \u2014 while maintaining continuous torque delivery throughout each full revolution of the drive line.<\/p>\n<\/div>\n

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Materials<\/h3>\n

Yoke body: 20CrMnTi alloy steel, carburised and case-hardened to 58-62 HRC on journal surfaces. Cross journal trunnion: 18CrNiMo7-6 bearing-grade steel, ground to h6 tolerance. Bearing cups: needle roller cage assembly, grease-retaining pressed steel cap. Keyway: machine-broached to K(js9) tolerance. Surface treatment: phosphate conversion coating + rust preventative oil for UK climate conditions. All materials comply with RoHS requirements and are traceable to mill certificates on request.<\/p>\n<\/div>\n

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Application Scenarios<\/h3>\n

Tractor PTO to trailed implement drives on UK arable, dairy, and horticultural farms. Small gearbox output connections on agricultural machinery including spreaders, balers, and hedge cutters. Industrial conveyor and packaging line drives in UK food manufacturing. Pump drive couplings in irrigation and water management systems. Workshop machinery: milling machines, lathes, and grinding stations where angular alignment is impractical. Replacement parts for legacy machinery where OEM parts are discontinued or lead times are prohibitive.<\/p>\n<\/div>\n<\/div>\n

The compact 40 mm overall length of the PB-S16-8D-40 makes it especially useful where installation space is constrained \u2014 a common challenge in the cramped drive-line assemblies of modern compact tractors and robotic agricultural vehicles increasingly common on progressive UK farms. The universal coupling’s ability to handle combined angular and axial misalignment in a single unit eliminates the need for additional flexible elements such as jaw couplings or rubber buffers, simplifying the drive line and reducing the number of potential failure points.<\/p>\n<\/div>\n

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Technical Specifications \u2014 Full PB-S Series<\/h2>\n

All dimensions in mm. Tolerances per ISO 286. The highlighted row (PB-S16) corresponds to the PB-S16-8D-40 featured on this page.<\/p>\n

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\"PB-S<\/p>\n

Fig. 2 \u2014 Bore, keyway, and yoke assembly detail<\/p>\n<\/div>\n<\/div>\n

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Seri<\/th>\nD(h7)
\nmm<\/span><\/th>\n		E
\nmm<\/span><\/th>\n		L
\nmm<\/span><\/th>\n		A
\nmm<\/span><\/th>\n		B
\nmm<\/span><\/th>\n		K(js9)
\nmm<\/span><\/th>\n		T
\nmm<\/span><\/th>\n		S(h8)
\nmm<\/span><\/th>\n		Sw(h8)
\nmm<\/span><\/th>\n<\/tr>\n<\/thead>\n
PB-S13<\/td>\n6<\/td>\n13<\/td>\n40<\/td>\n13<\/td>\n20<\/td>\n\u2014<\/td>\n\u2014<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
PB-S16 \u25b6<\/td>\n8<\/td>\n16<\/td>\n40<\/td>\n11<\/td>\n20<\/td>\n2<\/td>\n9<\/td>\n8<\/td>\n8<\/td>\n<\/tr>\n
PB-S20<\/td>\n10<\/td>\n20<\/td>\n45<\/td>\n11.5<\/td>\n22.5<\/td>\n3<\/td>\n11.4<\/td>\n10<\/td>\n10<\/td>\n<\/tr>\n
PB-S22<\/td>\n12<\/td>\n22<\/td>\n50<\/td>\n14<\/td>\n25<\/td>\n4<\/td>\n13.8<\/td>\n12<\/td>\n12<\/td>\n<\/tr>\n
PB-S25<\/td>\n14<\/td>\n25<\/td>\n56<\/td>\n15<\/td>\n28<\/td>\n5<\/td>\n16.3<\/td>\n14<\/td>\n14<\/td>\n<\/tr>\n
PB-S29<\/td>\n16<\/td>\n29<\/td>\n65<\/td>\n18<\/td>\n32.5<\/td>\n5<\/td>\n18.3<\/td>\n16<\/td>\n16<\/td>\n<\/tr>\n
PB-S32<\/td>\n18<\/td>\n32<\/td>\n72<\/td>\n19<\/td>\n36<\/td>\n6<\/td>\n20.8<\/td>\n18<\/td>\n18<\/td>\n<\/tr>\n
PB-S35<\/td>\n20<\/td>\n35<\/td>\n78<\/td>\n21.5<\/td>\n39<\/td>\n6<\/td>\n22.8<\/td>\n20<\/td>\n20<\/td>\n<\/tr>\n
PB-S37<\/td>\n20<\/td>\n37<\/td>\n82<\/td>\n21<\/td>\n41<\/td>\n6<\/td>\n22.8<\/td>\n20<\/td>\n20<\/td>\n<\/tr>\n
PB-S40<\/td>\n22<\/td>\n40<\/td>\n95<\/td>\n25.5<\/td>\n47.5<\/td>\n6<\/td>\n24.8<\/td>\n22<\/td>\n22<\/td>\n<\/tr>\n
PB-S45<\/td>\n25<\/td>\n45<\/td>\n108<\/td>\n31<\/td>\n54<\/td>\n8<\/td>\n28.3<\/td>\n25<\/td>\n25<\/td>\n<\/tr>\n
PB-S50<\/td>\n30<\/td>\n50<\/td>\n122<\/td>\n35<\/td>\n61<\/td>\n8<\/td>\n33.3<\/td>\n30<\/td>\n30<\/td>\n<\/tr>\n
PB-S60<\/td>\n35<\/td>\n60<\/td>\n160<\/td>\n49<\/td>\n80<\/td>\n10<\/td>\n38.3<\/td>\n35<\/td>\n35<\/td>\n<\/tr>\n
PB-S70<\/td>\n40<\/td>\n70<\/td>\n140<\/td>\n33.5<\/td>\n70<\/td>\n12<\/td>\n43.3<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
PB-S80<\/td>\n45<\/td>\n80<\/td>\n160<\/td>\n38<\/td>\n80<\/td>\n14<\/td>\n48.8<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
PB-S95<\/td>\n50<\/td>\n95<\/td>\n190<\/td>\n45<\/td>\n95<\/td>\n14<\/td>\n53.8<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u25b6 PB-S16 row highlighted as the featured model on this page. \u2014 indicates dimension not applicable for this series. All tolerances to ISO 286-1.<\/p>\n<\/div>\n

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

The universal coupling works in conjunction with our full range of PTO drive shafts. Select the series that matches your implement’s torque and operating angle requirements.<\/p>\n

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\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0PTO Drive Shaft G Series<\/a><\/div>\n
Standard-duty G-series shaft for general agricultural tractor implements. Wide availability across the UK; ideal for grassland machinery and light cultivation equipment.<\/div>\n
View Product \u2192<\/div>\n

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PTO Drive Shaft S Series<\/a><\/div>\n
Short and medium-length S-series shaft with reinforced guard tubes. Suited to slurry tankers, spreaders, and compact utility tractors common on UK dairy and arable farms.<\/div>\n
View Product \u2192<\/div>\n

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PTO Drive Shaft L Series<\/a><\/div>\n
Long-reach L-series designed for large-scale arable and horticultural equipment. Extended telescoping tube allows greater hitch offset; popular in East Anglian arable operations.<\/div>\n
View Product \u2192<\/div>\n

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PTO Drive Shaft T Series<\/a><\/div>\n
Heavy-duty T-series with integrated torque limiter options. Built for high-load applications such as wood chippers, rotary tillers, and industrial PTO generators used across Scotland and Wales.<\/div>\n<\/div>\n

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Customer Success Stories<\/h2>\n

Real applications from UK and European customers relying on PB-S series universal couplings.<\/p>\n

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Case Study \u2014 UK Arable Farming<\/div>\n

Cambridgeshire Arable Contractor Eliminates Seasonal Coupling Failures<\/h3>\n

A farm contracting business operating across 2,400 hectares of fenland in Cambridgeshire was experiencing repeated universal coupling failures on their rotary power harrows during the spring cultivation season. The original OEM couplings \u2014 a non-standard import \u2014 were failing at the yoke bore after approximately 180 hours of operation, causing costly downtime precisely when ground conditions were at their narrow seasonal optimum.<\/p>\n

Their workshop manager sourced PB-S32 universal couplings from pto-drive-shafts.com as a direct upgrade. The case-hardened journal surface and needle bearing cups proved capable of handling the shock loading typical of stone-struck cultivation work in the fens. After two full seasons totalling over 420 hours per machine, the couplings required only routine grease nipple servicing \u2014 no replacements.<\/p>\n

\"Ever-Power<\/p>\n

Hasil:<\/span>
\n Zero coupling replacements over two seasons. Estimated saving: \u00a33,200 per machine in parts and labour. Cultivation schedule maintained without disruption.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We replaced three different brands of universal coupling trying to solve vibration issues on our bale wrapper. The PB-S29 from pto-drive-shafts.com sorted it in the first season. No vibration, no play, grease nipple right where you’d want it. Ordered five more for our other machines.”<\/p>\n

James Hartley<\/div>\n
Farm Manager, North Yorkshire \u2014 Round Bale Contractor<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“I run a small industrial bakery in Leeds and needed replacement couplings for our dough mixer drive. The PB-S20 was the exact bore and keyway we needed. Delivery arrived in four working days, the dimensions were spot on, and the finish was excellent. Good value for a component that runs 16 hours a day.”<\/p>\n

Sarah Crompton<\/div>\n
Production Manager, West Yorkshire \u2014 Food Manufacturing<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We ordered a batch of 40 PB-S16 couplings for a production run of compact conveyor units. The team provided full dimensional drawings on request, arranged mill certificate documentation without any fuss, and met our delivery window. These are now our standard specification coupling across that product line.”<\/p>\n

David Ogden<\/div>\n
Procurement Engineer, East Midlands \u2014 Conveyor OEM Manufacturer<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Our Manufacturing Capability & Custom Service<\/h2>\n

Supplying British engineers and agricultural distributors with precision-engineered couplings direct from our manufacturing facility.<\/p>\n

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\"Ever-Power<\/div>\n<\/div>\n
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Custom Bore Machining<\/div>\n

Non-standard bore diameters, metric and imperial keyways, and custom keyway widths machined to customer-supplied drawings. Minimum quantities from 5 pieces for custom bores within the PB-S series.<\/p>\n<\/div>\n

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OEM & White-Label Programmes<\/div>\n

We supply UK machinery manufacturers and dealers under OEM programmes, including private labelling, custom packaging, and dedicated part number assignment aligned to your product catalogue.<\/p>\n<\/div>\n

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Material Certificates & QC<\/div>\n

Full material traceability, dimensional inspection reports, and third-party test certificates available on request. Our in-house CMM facility measures every production batch against drawing tolerances before shipment.<\/p>\n<\/div>\n

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UK Stock & Fast Despatch<\/div>\n

Standard PB-S series sizes held in stock for rapid despatch to UK agricultural merchants, parts distributors, and end users. Urgent orders for harvest and cultivation season breakdowns handled as priority.<\/p>\n<\/div>\n<\/div>\n

\ud83d\udcb3 Get a Quote \u2014 sales@pto-drive-shafts.com<\/a><\/div>\n<\/div>\n

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Pertanyaan yang Sering Diajukan<\/h2>\n

Tap any question to expand the answer.<\/p>\n

\nWhat is the best universal coupling supplier for UK agricultural PTO drive shafts, and where can I get a competitive price quote?
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pto-drive-shafts.com supplies PB-S series universal couplings directly to UK agricultural contractors, farm machinery dealers, and industrial engineers. We offer competitive trade pricing on standard stock sizes and custom-engineered options. To receive a quote tailored to your bore size, quantity, and delivery location within the UK, email sales@pto-drive-shafts.com with your part number or dimensional requirements.<\/div>\n<\/details>\n
\nHow do I know which PB-S series universal coupling size I need for my tractor PTO shaft or agricultural implement in England?
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The key selection parameters are the shaft bore diameter (D h7) of the stub shaft you are connecting to, and the keyway width and depth if applicable. Measure the shaft diameter precisely with a micrometer \u2014 not a tape \u2014 and cross-reference against the specification table above. For example, an 8 mm shaft requires PB-S16; a 16 mm shaft requires PB-S29. If your shaft falls between sizes, email us with the drawing or measurement and we will advise the correct series or arrange a custom bore.<\/div>\n<\/details>\n
\nWhat is the typical cost of a PB-S16-8D-40 universal coupling when ordering in bulk quantities for a UK machinery dealership?
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Unit price depends on order quantity, material specification, and any custom machining required. We offer tiered trade pricing for dealerships and distributors holding standing stock across the PB-S range. Please contact sales@pto-drive-shafts.com with your expected annual volume and current sourcing arrangement \u2014 we will provide a formal quotation with price breaks within one business day.<\/div>\n<\/details>\n
\nWhich universal coupling series is suitable for heavy-duty stone crusher and wood chipper PTO drives on UK agricultural contracting equipment?
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For high-shock PTO applications like stone crushers, wood chippers, and heavy rotary tillers, we recommend PB-S40 through PB-S95 depending on shaft bore and torque rating. These larger series provide greater cross-journal trunnion diameter, heavier needle bearing cups, and stronger yoke bodies capable of handling the sudden torque spikes these implements generate. Our PTO Drive Shaft T Series<\/a> is specifically engineered as the complete drive solution for these demanding applications.<\/div>\n<\/details>\n
\nHow often should I grease a PB-S universal coupling on my farm machinery, and what type of grease should I use in UK weather conditions?
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Under typical UK agricultural use (up to 500 hours per season), we recommend greasing every 50 operating hours or at the start of each week during busy seasons. Use an extreme-pressure (EP) lithium complex grease, NLGI Grade 2, suitable for operating temperatures of -20 degrees C to +120 degrees C \u2014 appropriate for British climate conditions including winter hedge cutting and autumn cultivation. Inject grease via the nipple until fresh grease appears at the bearing cup seals. In high-speed applications above 600 rpm, reduce intervals to 25 hours.<\/div>\n<\/details>\n
\nCan I order a custom bore or non-standard keyway universal coupling for an OEM project at a UK conveyor or packaging machinery manufacturer?
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Yes. We manufacture custom bore diameters, non-standard keyway widths and depths, imperial bore sizes, and special surface treatments to customer drawings and specifications. Minimum quantities for custom machining start from 5 pieces, with no tooling surcharge for sizes within our standard yoke range. For new OEM programmes involving non-standard yoke geometry or flanged connections, contact our engineering team at sales@pto-drive-shafts.com with your drawing or CAD file.<\/div>\n<\/details>\n
\nWhere can I find a reliable PTO drive shaft and universal coupling distributor or stockist for next-day delivery to farms and workshops across Scotland, Wales, and Northern England?
\n+<\/span><\/summary>\n
pto-drive-shafts.com despatches standard PB-S series universal couplings and full PTO drive shaft assemblies to all UK destinations including Scotland, Wales, Northern Ireland, and the most remote rural postcodes in northern England. Urgent orders placed before noon on working days are processed same day. Contact us at sales@pto-drive-shafts.com to discuss stockholding arrangements, trade accounts, or consignment stock programmes for agricultural merchants and machinery dealers serving these regions.<\/div>\n<\/details>\n<\/div>\n

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Ready to Source PB-S16-8D-40 Universal Couplings for Your UK Operation?<\/h3>\n

Our engineering team responds to all UK enquiries within one working day. Custom specifications, OEM pricing, and urgent stock enquiries all welcome.<\/p>\n

\ud83d\udcb3 Get a Quote \u2014 sales@pto-drive-shafts.com<\/a><\/p>\n

pto-drive-shafts.com | Precision PTO Components for UK Agriculture & Industry\u00a0 | edit by\u00a0 gzl<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

PB-S16-8D-40 Universal Coupling \u2014 precision alloy steel, 8mm bore, 40mm length. Suits UK agricultural PTO drive shafts and industrial gearboxes. Full PB-S series, custom bores available.<\/p>","protected":false},"featured_media":3454,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1801],"product_tag":[],"class_list":["post-3453","product","type-product","status-publish","has-post-thumbnail","product_cat-coupling","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/product\/3453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/comments?post=3453"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/media\/3454"}],"wp:attachment":[{"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/media?parent=3453"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/product_brand?post=3453"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/product_cat?post=3453"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.pto-drive-shafts.com\/id\/wp-json\/wp\/v2\/product_tag?post=3453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}