{"id":712,"date":"2026-03-04T03:25:51","date_gmt":"2026-03-04T03:25:51","guid":{"rendered":"https:\/\/pto-drive-shaft.com\/?post_type=product&p=712"},"modified":"2026-03-04T06:20:14","modified_gmt":"2026-03-04T06:20:14","slug":"s-series-pto-shaft","status":"publish","type":"product","link":"https:\/\/pto-drive-shaft.com\/ja\/product\/s-series-pto-shaft\/","title":{"rendered":"S Series PTO Shaft"},"content":{"rendered":"

Core Powertrain Selection Summary<\/h2>\n
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When selecting an S Series PTO Shaft, engineers must focus on three critical dimensions. First, the Operating Torque<\/strong> must be precisely matched based on the tractor’s rated power (Kw or Pk) and output shaft speed (540 or 1000 RPM). For instance, the S32 series handles 695 Nm at 540 RPM and 580 Nm at 1000 RPM. Second, the Cross Dimensions (Universal Joint)<\/strong> span from 30.2x92mm (S6) to a massive 50x118mm (S50), dictating the fatigue life under various deflection angles. Finally, the End Connections (Splined Yoke & Tube Yoke)<\/strong> must mesh perfectly with the implement end. As an experienced pto shaft supplier, we strongly recommend leaving a 15% torque safety margin to accommodate the instantaneous shock loads typical during agricultural machinery startups.<\/p>\n

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

Product Overview<\/h2>\n

In vast modern agricultural environments, particularly in regions like Australia with massive farm scales and extreme climate conditions, the reliability of a tractor pto shaft faces ultimate tests. The Power Take-Off (PTO) shaft is the vital lifeline that transmits mechanical energy from the tractor’s engine to trailed or mounted implements, such as slashers, rotary hoes, balers, and fertilizer spreaders. Traditional, substandard pto drive shafts are highly susceptible to fatal failures\u2014such as universal joint wear, telescoping tube seizing, or safety shield cracking\u2014when exposed to prolonged droughts, heavy dust, or muddy conditions.<\/p>\n

The S Series PTO Shaft was systematically innovated to address these exact pain points. In terms of materials engineering, we utilize high-strength alloy steel and employ advanced carburizing and quenching processes to significantly enhance the surface hardness and core toughness of the splined yoke and cross. Compared to alternative products on the market lacking strict heat treatment, our agricultural drive shafts boast an increase in torsional fatigue strength of over 40%. Whether operating in continuous seeding operations on flat plains or non-linear power transmission at steep angles in hilly terrains, the S Series demonstrates unparalleled engineering stability.<\/p>\n

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\"PTO<\/p>\n

Figure: Field demonstration of the S Series PTO Shaft on heavy-duty traction machinery.<\/p>\n<\/div>\n

S Series PTO Shaft Technical Specifications<\/h2>\n

The following data is based on rigorous laboratory bench tests and live field feedback. To ensure your equipment achieves optimal power matching, please refer to the torque performance and connection dimension parameters across the S6 to S50 series at different speeds.<\/p>\n

1. Operating Torque & Power Matching Table<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Series<\/th>\n540 tr.\/min<\/th>\n1000 tr.\/min<\/th>\nMP (NM)<\/th>\n<\/tr>\n
Kw<\/th>\nPk<\/th>\nNm<\/th>\nKw<\/th>\nPk<\/th>\nNm<\/th>\n<\/tr>\n<\/thead>\n
S6<\/td>\n47<\/td>\n64<\/td>\n830<\/td>\n74<\/td>\n100<\/td>\n710<\/td>\n1450<\/td>\n<\/tr>\n
S7<\/td>\n55<\/td>\n75<\/td>\n970<\/td>\n87<\/td>\n118<\/td>\n830<\/td>\n1800<\/td>\n<\/tr>\n
S8<\/td>\n70<\/td>\n95<\/td>\n1240<\/td>\n110<\/td>\n150<\/td>\n1050<\/td>\n2250<\/td>\n<\/tr>\n
S38<\/td>\n78<\/td>\n105<\/td>\n1380<\/td>\n123<\/td>\n166<\/td>\n1175<\/td>\n2500<\/td>\n<\/tr>\n
S32<\/td>\n39<\/td>\n53<\/td>\n695<\/td>\n61<\/td>\n83<\/td>\n580<\/td>\n1200<\/td>\n<\/tr>\n
S36<\/td>\n66<\/td>\n90<\/td>\n1175<\/td>\n102<\/td>\n139<\/td>\n975<\/td>\n2000<\/td>\n<\/tr>\n
S9<\/td>\n88<\/td>\n120<\/td>\n1560<\/td>\n140<\/td>\n190<\/td>\n1340<\/td>\n2800<\/td>\n<\/tr>\n
S10<\/td>\n106<\/td>\n145<\/td>\n1905<\/td>\n170<\/td>\n230<\/td>\n1650<\/td>\n3500<\/td>\n<\/tr>\n
S42<\/td>\n79<\/td>\n107<\/td>\n1400<\/td>\n122<\/td>\n166<\/td>\n1175<\/td>\n2500<\/td>\n<\/tr>\n
S48<\/td>\n133<\/td>\n180<\/td>\n2390<\/td>\n205<\/td>\n277<\/td>\n1958<\/td>\n4200<\/td>\n<\/tr>\n
S50<\/td>\n119<\/td>\n162<\/td>\n2095<\/td>\n182<\/td>\n248<\/td>\n1740<\/td>\n3700<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

2. Universal Joint & Connection Dimensions<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Series<\/th>\nCross<\/th>\nJoint simple<\/th>\nSplined yoke<\/th>\nTube yoke<\/th>\nTube<\/th>\n<\/tr>\n
Outer<\/th>\nInner<\/th>\nOuter<\/th>\nInner<\/th>\nOuter<\/th>\nInner<\/th>\n<\/tr>\n<\/thead>\n
S6<\/td>\n6.01 (30.2*92)<\/td>\n6.0505B+6.01+6.06S<\/td>\n6.0505B+6.01+6.07S<\/td>\n6.0505B<\/td>\n6.06S<\/td>\n6.07S<\/td>\n6.03ST<\/td>\n6.04ST<\/td>\n<\/tr>\n
S7<\/td>\n7.01 (30.2*106.5)<\/td>\n7.0505B+7.01+7.06S<\/td>\n7.0505B+7.01+7.07S<\/td>\n7.0505B<\/td>\n7.06S<\/td>\n7.07S<\/td>\n<\/tr>\n
S8<\/td>\n8.01 (35*106.5)<\/td>\n8.0505B+8.01+8.06S<\/td>\n8.0505B+8.01+8.07S<\/td>\n8.0505B<\/td>\n8.06S<\/td>\n8.07S<\/td>\n<\/tr>\n
S38<\/td>\n38.0 (38*105.6)<\/td>\n38.0505B+38.01+38.06S<\/td>\n38.0505B+38.01+38.07S<\/td>\n38.0505B<\/td>\n38.06S<\/td>\n38.07S<\/td>\n<\/tr>\n
S10<\/td>\n10.01 (41*118)<\/td>\n10.0505B+10.01+10.06S<\/td>\n10.0505B+10.01+10.07S<\/td>\n10.0505B<\/td>\n10.06S<\/td>\n10.07S<\/td>\n<\/tr>\n
S50<\/td>\n50.01 (50*118)<\/td>\n50.0505B+50.01+50.06S<\/td>\n50.0505B+50.01+50.07S<\/td>\n50.0505B<\/td>\n50.06S<\/td>\n50.07S<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Core Performance Advantages: Engineering Beyond the Standard<\/h2>\n

After analyzing numerous low-cost pto shafts on the market, our 20 years of experience as an elite pto shaft manufacturer have taught us that a simple price war always means sacrificing safety and equipment lifespan. Ever-power’s S Series provides an overwhelming advantage over inferior drive shafts:<\/p>\n