{"id":779,"date":"2026-09-18T01:48:19","date_gmt":"2026-09-18T01:48:19","guid":{"rendered":"https:\/\/drivelines.net\/product\/series-36-clamp-bolt-pto-yoke-1-3-4-20-spline-36x89-mm-cross\/"},"modified":"2026-09-18T01:48:19","modified_gmt":"2026-09-18T01:48:19","slug":"series-36-clamp-bolt-pto-yoke-1-3-4-20-spline-36x89-mm-cross","status":"publish","type":"product","link":"https:\/\/drivelines.net\/uk\/product\/series-36-clamp-bolt-pto-yoke-1-3-4-20-spline-36x89-mm-cross\/","title":{"rendered":"Series 36 Clamp Bolt PTO Yoke \u2014 1-3\/4″ 20 Spline (36\u00d789 mm Cross)"},"content":{"rendered":"
\n
\n
\n
<\/div>\n

Series 36<\/p><\/div>\n

\n
<\/div>\n

1-3\/4″ 20-Spline (1,000 rpm)<\/p><\/div>\n

\n
<\/div>\n

36\u00d789 mm Cross Kit<\/p><\/div>\n

\n
<\/div>\n

Interfering Clamp Bolt<\/p><\/div>\n

\n
<\/div>\n

High Vibration Rated<\/p><\/div>\n

\n
<\/div>\n

\u0421\u0435\u0440\u0442\u0438\u0444\u0456\u043a\u043e\u0432\u0430\u043d\u043e CE<\/p><\/div>\n

\n
<\/div>\n

\u041c\u0456\u043d\u0456\u043c\u0430\u043b\u044c\u043d\u0430 \u0437\u0430\u043c\u043e\u0432\u043d\u0430 \u0446\u0456\u043d\u0430 1 \u0448\u0442. \u2014 \u0413\u043e\u0442\u043e\u0432\u0438\u0439 \u0434\u043e \u0432\u0438\u043a\u043e\u0440\u0438\u0441\u0442\u0430\u043d\u043d\u044f LGPD<\/p><\/div>\n<\/div>\n

Series 36 Z20 Clamp Bolt PTO Yoke — Compatible Shaft Series<\/h2>\n
\n\n\n\n\n\n
Compatible Shaft<\/th>\nSeries Type<\/th>\n\u041a\u043e\u043c\u043f\u043b\u0435\u043a\u0442 \u0434\u043b\u044f \u043a\u0440\u043e\u0441\u0443<\/th>\n\u0414\u0456\u0430\u043f\u0430\u0437\u043e\u043d HP<\/th>\n<\/tr>\n<\/thead>\n
S36<\/td>\nS Series (Star)<\/td>\n36\u00d789 mm<\/td>\n70\u2013100 hp<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n
\n
Series 36<\/div>\n
Shaft Series<\/div>\n<\/div>\n
\n
36\u00d789<\/div>\n
Cross Kit mm<\/div>\n<\/div>\n
\n
20-Spline<\/div>\n
1-3\/4″<\/div>\n<\/div>\n
\n
36 mm<\/div>\n
Cross Pin Ø<\/div>\n<\/div>\n<\/div>\n
Series: 36<\/span>Spline: 1-3\/4″ Z20 (20-spline)<\/span>Cross: 36\u00d789 mm<\/span>Pin Ø: 36 mm<\/span>Lock: Interfering Clamp Bolt<\/span>Material: 20CrMnTi forged steel<\/span>Finish: Phosphate coat<\/span>Bore: Induction hardened<\/span>Compatible: S36<\/span><\/div>\n

\u041e\u0433\u043b\u044f\u0434<\/h2>\n
\n
⚙ Series 36 — Cross kit 36\u00d789 mm, Pin Ø 36 mm<\/div>\n
🔗 Compatible: S36 drive shafts<\/div>\n
▲ 1-3\/4″ Z20 bore (20-spline) — 1-3\/4″ 20-Spline (1,000 rpm)<\/div>\n
🔧 Interfering clamp bolt — tool-secured, vibration-resistant, no spring element<\/div>\n
⚔ 20CrMnTi forged steel — induction-hardened bearing seat and spline bore<\/div>\n
🌎 CE certified — LGPD compliant, ships to Brazil<\/div>\n<\/div>\n

\u041e\u043f\u0438\u0441 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0443<\/h2>\n

Series 36 Clamp Bolt Splined Yoke \u2014 1-3\/4″ 20-Spline (Z20) is the interfering clamp bolt version for 1,000 rpm PTO applications. The 1-3\/4″ Z20 stub is physically larger than the Z6 stub (44.5 mm vs 34.9 mm outer diameter) \u2014 the size difference is visible without measuring, making incorrect fitment physically impossible.<\/p>\n

The 36\u00d789 mm cross-kit seat is identical to the Series 36 Z6 and Z21 clamp bolt variants \u2014 the cross kit is shared across all spline specifications at Series 36. At 1,000 rpm, the shaft Nm@1000 rating must be confirmed against the implement demand before selecting Series 36 \u2014 the rated torque at 1,000 rpm is lower than at 540 rpm for the same cross-kit class.<\/p>\n

Series 36 Z20 clamp bolt is specified on large baler and forage harvester driveline assemblies running 1,000 rpm PTO where permanent seasonal connection is required. For Z20 clamp bolt OEM supply, \u0417\u0432'\u044f\u0436\u0456\u0442\u044c\u0441\u044f \u0437 Ever-Power Drive Line<\/a>.<\/p>\n

Clamp Bolt Locking Mechanism — Installation Procedure<\/h2>\n
\"Series<\/p>\n

The interfering clamp bolt bites into the spline bore wall when tightened, creating a mechanically locked connection independent of any spring element.<\/p>\n<\/div>\n

\n
\n
1<\/div>\n

Clean and Align<\/p>\n

Clean the spline bore and PTO stub. Align the yoke spline bore with the stub splines. Slide the yoke fully onto the stub until it is completely seated \u2014 no gap between yoke face and stub shoulder.<\/p>\n<\/div>\n

\n
2<\/div>\n

Insert and Hand-Tighten Bolt<\/p>\n

Insert the clamp bolt through the yoke clamp collar. Hand-tighten until the bolt contacts the spline bore wall. Do not use impact tools at this stage \u2014 the bolt must be guided in straight.<\/p>\n<\/div>\n

\n
3<\/div>\n

Torque to Specification<\/p>\n

Use a calibrated torque wrench. Tighten to 25–30 Nm for Series 1–5; 35–45 Nm for Series 6–8. Inspect and retorque at first 10 hours, then every 50 hours in high-vibration duty.<\/p>\n<\/div>\n<\/div>\n

\n

⚠ Clamp Bolt vs Quick Release — Choose the Right Locking Type<\/p>\n

Clamp bolt:<\/strong> Use when the yoke remains connected for the season — OEM factory-fit, high-vibration implements, applications where removal requires tools by design. Quick release:<\/strong> Use when daily connect\/disconnect is required. The cross-kit and dimensional specifications are identical between both variants at Series 36.<\/p>\n<\/div>\n

Dimensional Drawing — A \/ B \/ C \/ D Reference<\/h2>\n
\"Series<\/p>\n

A = Overall length  |  B = Cross pin diameter  |  C = Yoke width  |  D = Bore diameter. Refer to the compatibility table above for exact mm values.<\/p>\n<\/div>\n

\"Series<\/p>\n

End-face view of the 1-3\/4″ Z20 bore (20-spline). Count the splines to confirm specification before ordering.<\/p>\n<\/div>\n

Cross-Reference Part Numbers<\/h2>\n
\n\n\n\n\n\n\n\n\n
Brand \/ Standard<\/th>\nPart Number \/ Reference<\/th>\nNotes<\/th>\n<\/tr>\n<\/thead>\n
Weasler (North American)<\/td>\n103-3620<\/td>\nClamp bolt \/ interfering bolt, C\/E suffix<\/td>\n<\/tr>\n
Sparex \/ Eurocardan (European)<\/td>\nS.7539<\/td>\nInterfering clamp bolt, Series 36 Z20<\/td>\n<\/tr>\n
Bondioli & Pavesi (Italian)<\/td>\n6.05.36Z<\/td>\nAB36\/A36 catalog reference<\/td>\n<\/tr>\n
Ever-Power Drive Line (This product)<\/td>\nEPG-YK-CB-36-Z20<\/td>\nEPG Series 36 CB Z20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u0414\u043e\u0432\u0456\u0434\u043a\u0430 \u043f\u0440\u043e \u043f\u0440\u043e\u0444\u0456\u043b\u044c \u0441\u043f\u043b\u0430\u0439\u043d\u0443<\/h2>\n
\"PTO<\/p>\n

Left: Z6 (6-spline, 540 rpm) — Centre: Z21 (21-spline, European) — Right: Z20 (20-spline, 1,000 rpm)<\/p>\n<\/div>\n

\u041e\u0441\u043d\u043e\u0432\u043d\u0456 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0438<\/h2>\n
\n
\n
<\/div>\n
\n

Interfering Clamp Bolt Lock<\/p>\n

The bolt threads into the yoke clamp collar and bites into the spline bore wall when tightened, creating a mechanically interlocked connection. Unlike a spring-loaded push-pin, the clamp bolt connection does not depend on any spring element \u2014 there is no spring to fatigue, no collar to wear, and no retention pin to lose in field conditions.<\/p>\n<\/div>\n<\/div>\n

\n
<\/div>\n
\n

High Vibration Resistance<\/p>\n

The bolt-secured connection maintains its clamping force under sustained vibration loads that cycle a push-pin spring mechanism. Specified for rotary cutters, forage harvesters, and high-duty-cycle implements where vibration fatigue is a concern over 300+ hour operating seasons. Retorque inspection at 50-hour intervals ensures sustained clamping force.<\/p>\n<\/div>\n<\/div>\n

\n
<\/div>\n
\n

1-3\/4″ Z20 Spline Bore<\/p>\n

Standard 1,000 rpm high-speed PTO interface \u2014 fits all Z20 stubs. Induction-hardened spline bore for long-term engagement durability.<\/p>\n<\/div>\n<\/div>\n

\n
<\/div>\n
\n

36\u00d789 mm Cross-Kit Seat<\/p>\n

Precision-machined cross-kit bearing cup bores hardened to accept 36 mm pin diameter needle-roller cross-kit cups. Cross kit (code 36.01) is shared with the Quick Release version at Series 36 \u2014 one part number covers both variants.<\/p>\n<\/div>\n<\/div>\n

\n
<\/div>\n
\n

20CrMnTi Forged Steel Body<\/p>\n

Drop-forged chromium-manganese-titanium alloy steel yoke body, normalised and induction-hardened at the bearing seat bores. Phosphate surface coating provides corrosion resistance in outdoor agricultural conditions. Clamp bolt collar is machined integral with the yoke body \u2014 no separate clamp ring to lose or misalign.<\/p>\n<\/div>\n<\/div>\n

\n
<\/div>\n
\n

CE Certified \u2014 LGPD Ready<\/p>\n

CE Declaration of Conformity and ISO 9001:2015 documentation included with every shipment. LGPD data handling compliance for Brazil import submissions. SGS third-party inspection available for contract orders.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\u0422\u0438\u043f\u043e\u0432\u0456 \u0437\u0430\u0441\u0442\u043e\u0441\u0443\u0432\u0430\u043d\u043d\u044f<\/h2>\n
\"Series<\/p>\n

Series 36 CB Z20 — permanent-mount tractor-end connection for 70\u2013100 hp implements<\/p>\n<\/div>\n

\n
\n

Disc Mower \u2014 36 mm OEM Spec<\/p>\n

Series 36 clamp bolt is factory-fitted on specific disc mower drivelines where the 36\u00d789 mm bore is the OEM specification for permanent implement-end connection.<\/p>\n<\/div>\n

\n

Heavy Mower-Conditioner \u2014 70\u2013100 hp<\/p>\n

Large mower-conditioner tractor-end connections at Series 36 torque class where the clamp bolt provides permanent connection for extended seasonal mowing campaigns.<\/p>\n<\/div>\n

\n

European OEM Transitional Series<\/p>\n

Series 36 clamp bolt replaces Series 36 QR yokes on permanent-mount European OEM implement drivelines requiring the 36 mm bore diameter.<\/p>\n<\/div>\n<\/div>\n

Installation Steps<\/h2>\n
\n
\n
1<\/div>\n

Verify Series and Spline<\/p>\n

Confirm your PTO shaft is Series 36 (36\u00d789 mm cross kit) and your tractor PTO stub is Z20 (1-3\/4″ 20-spline). Count the splines to confirm.<\/p>\n<\/div>\n

\n
2<\/div>\n

Clean Stub and Bore<\/p>\n

Remove all rust, debris, and old lubricant from both the PTO stub and the yoke spline bore. Clean mating surfaces ensure maximum contact area and correct bolt seating.<\/p>\n<\/div>\n

\n
3<\/div>\n

Slide and Seat Yoke<\/p>\n

Align splines and push the yoke fully onto the stub until the yoke face contacts the stub shoulder. Full seating is essential before bolt tightening \u2014 a partially seated yoke will not lock correctly.<\/p>\n<\/div>\n

\n
4<\/div>\n

Torque the Clamp Bolt<\/p>\n

Insert the clamp bolt and tighten with a calibrated torque wrench to 25–30 Nm (Series 1–5) or 35–45 Nm (Series 6–8). Do not use impact tools. Verify bolt is fully threaded before torquing.<\/p>\n<\/div>\n

\n
5<\/div>\n

Anchor Shield and Inspect<\/p>\n

Connect the shaft safety shield chains to non-rotating points on tractor and implement. Inspect the bolt after the first 10 hours of operation and retorque to specification. Reinspect every 50 hours in high-vibration duty.<\/p>\n<\/div>\n<\/div>\n

\u0427\u0430\u0441\u0442\u0456 \u0437\u0430\u043f\u0438\u0442\u0430\u043d\u043d\u044f<\/h2>\n
\n
\n
How do I identify a Z20 PTO stub?<\/div>\n
\n
    \n
  • —<\/span>Count 20 splines on the PTO stub \u2014 the definitive identification method<\/li>\n
  • —<\/span>Z20 outer diameter is 1-3\/4″ (44.5 mm) \u2014 noticeably larger than Z6 (34.9 mm)<\/li>\n
  • —<\/span>Z20 stubs are on all tractors with 1,000 rpm PTO output<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
    \n
    Is the cross kit the same for Z20 as Z6 at Series 36?<\/div>\n
    \n
      \n
    • —<\/span>Yes \u2014 36\u00d789 mm cross kit (code 36.01) is shared across Z6, Z21, and Z20 at this series<\/li>\n
    • —<\/span>One part number covers all three spline variants<\/li>\n
    • —<\/span>Only the yoke body differs between spline specifications<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
      \n
      When should I use clamp bolt instead of quick release at Z20?<\/div>\n
      \n
        \n
      • —<\/span>Use clamp bolt for OEM 1,000 rpm driveline assemblies connected for the full season<\/li>\n
      • —<\/span>Use quick release for 1,000 rpm applications requiring daily connect\/disconnect<\/li>\n
      • —<\/span>Clamp bolt is more common at Z20 because large baler and harvester drivelines are typically seasonal mounts<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
        \n
        What is the Nm@1000 rpm rating to use when selecting Series?<\/div>\n
        \n
          \n
        • —<\/span>Always use the Nm@1000 column from the T Series torque table when selecting for 1,000 rpm<\/li>\n
        • —<\/span>The Nm@1000 rating is always lower than Nm@540 for the same cross-kit series<\/li>\n
        • —<\/span>Confirm your implement demand does not exceed the Series 36 Nm@1000 value<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
          \n
          What is the bolt tightening torque for Z20 clamp bolt?<\/div>\n
          \n
            \n
          • —<\/span>Same torque specification as Z6 at Series 36: 25\u201330 Nm (S1\u20135) or 35\u201345 Nm (S6\u20138)<\/li>\n
          • —<\/span>Inspect and retorque at 50-hour intervals<\/li>\n
          • —<\/span>The larger Z20 bore does not change the bolt torque requirement<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n

            \u0412\u0456\u0434\u0433\u0443\u043a\u0438 \u043a\u043b\u0456\u0454\u043d\u0442\u0456\u0432<\/h2>\n
            \n
            \n
            \n
            \n

            Thiago C.<\/p>\n

            Goi\u00e1s, Brazil \u2014 Large Baler OEM<\/p>\n<\/div>\n

            ★★★★★<\/span><\/div>\n

              \n
            • Series 36 Z20 clamp bolt fitted as factory standard on our 1,000 rpm baler driveline<\/li>\n
            • Permanent connection holds throughout the baling season \u2014 no retorquing issues after 50-hour check<\/li>\n
            • CE documentation complete for our ANVISA machinery registration<\/li>\n<\/ul>\n<\/div>\n
              \n
              \n
              \n

              Patricia V.<\/p>\n

              Santiago, Chile \u2014 Agricultural Machinery Dealer<\/p>\n<\/div>\n

              ★★★★★<\/span><\/div>\n

                \n
              • Series 36 Z20 CB stocked for 1,000 rpm tractor customers \u2014 replaces OEM interfering bolt yokes<\/li>\n
              • Z20 bore confirmed correct on all Z20 stub tractors in our service fleet<\/li>\n
              • Consistent 9-day lead time from stock<\/li>\n<\/ul>\n<\/div>\n<\/div>\n

                \u0406\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0456\u044f \u043f\u0440\u043e \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0443 \u0442\u0430 \u0437\u0430\u043c\u043e\u0432\u043b\u0435\u043d\u043d\u044f<\/h2>\n
                \n
                \n

                \u041c\u0456\u043d\u0456\u043c\u0430\u043b\u044c\u043d\u0430 \u043a\u0456\u043b\u044c\u043a\u0456\u0441\u0442\u044c \u0437\u0430\u043c\u043e\u0432\u043b\u0435\u043d\u043d\u044f<\/p>\n

                1 pc from stock
                50 pcs custom \/ OEM<\/p>\n<\/div>\n

                \n

                \u0427\u0430\u0441 \u0432\u0438\u043a\u043e\u043d\u0430\u043d\u043d\u044f<\/p>\n

                7\u201310 \u0434\u043d\u0456\u0432 (\u0432 \u043d\u0430\u044f\u0432\u043d\u043e\u0441\u0442\u0456)
                20–30 days (OEM)<\/p>\n<\/div>\n

                \n

                \u0414\u043e\u0441\u0442\u0430\u0432\u043a\u0430<\/p>\n

                Sea \/ Air to Brazil
                South America<\/p>\n<\/div>\n

                \n

                \u0422\u043e\u0440\u0433\u043e\u0432\u0435\u043b\u044c\u043d\u0456 \u0443\u043c\u043e\u0432\u0438<\/p>\n

                FOB Ningbo
                \u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0456 CIF \u0421\u0430\u043d\u0442\u043e\u0441<\/p>\n<\/div>\n<\/div>\n

                \u0421\u0435\u0440\u0442\u0438\u0444\u0456\u043a\u0430\u0442\u0438<\/h2>\n
                \n
                \"CE\"\u0421\u0435\u0440\u0442\u0438\u0444\u0456\u043a\u043e\u0432\u0430\u043d\u043e CE<\/span><\/div>\n
                \"ISOISO 9001:2015<\/span><\/div>\n
                \"TS\/16949\"TS\/16949<\/span><\/div>\n
                \"\u0421\u0413\u0421\"\u0406\u043d\u0441\u043f\u0435\u043a\u0446\u0456\u044f SGS<\/span><\/div>\n
                \n
                <\/div>\n

                \u0412\u0456\u0434\u043f\u043e\u0432\u0456\u0434\u043d\u0456\u0441\u0442\u044c LGPD<\/span><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

                Series 36 Clamp Bolt PTO Yoke (Interfering Bolt) from Ever-Power Drive Line. 1-3\/4 inch 20-spline (Z20, 1,000 rpm) — bolt-secured interfering clamp, no spring element, high vibration rated. Cross-kit seat: 36\u00d789 mm (36.01), Pin Ø 36 mm. Compatible with: S36. 20CrMnTi forged steel, induction-hardened bore, phosphate finish. CE certified, ISO 9001. MOQ 1 pc. Ships to Brazil.<\/p>","protected":false},"featured_media":694,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1222],"product_tag":[1229,1150,1223,993,1224,1228,1181],"class_list":["post-779","product","type-product","status-publish","has-post-thumbnail","product_cat-clamp-bolt-splined-yoke","product_tag-36x89-mm-cross-kit-yoke","product_tag-agricultural-pto-yoke","product_tag-clamp-bolt-pto-yoke","product_tag-ever-power-drive-line","product_tag-interfering-bolt-yoke","product_tag-series-36-pto-yoke","product_tag-z20-pto-yoke","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/product\/779","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/comments?post=779"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/media\/694"}],"wp:attachment":[{"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/media?parent=779"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/product_brand?post=779"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/product_cat?post=779"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/drivelines.net\/uk\/wp-json\/wp\/v2\/product_tag?post=779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}