{"id":839,"date":"2026-03-19T04:02:54","date_gmt":"2026-03-19T04:02:54","guid":{"rendered":"https:\/\/ptoparts.top\/product\/pto-drive-shaft-s-series-star-profile-heavy-duty-agricultural-pto-shaft\/"},"modified":"2026-03-19T04:03:13","modified_gmt":"2026-03-19T04:03:13","slug":"pto-drive-shaft-s-series-star-profile-heavy-duty-agricultural-pto-shaft","status":"publish","type":"product","link":"https:\/\/ptoparts.top\/ms\/product\/pto-drive-shaft-s-series-star-profile-heavy-duty-agricultural-pto-shaft\/","title":{"rendered":"PTO Drive Shaft S Series \u2013 Star Profile Heavy-Duty Agricultural PTO Shaft"},"content":{"rendered":"

S Series PTO Drive Shaft \u2013 Star-Profile Engineering for Maximum Torque Capacity<\/h2>\n

When agricultural operations push beyond the limits of standard PTO shafts, the S Series star-profile PTO drive shaft<\/strong> delivers. Featuring a distinctive six-pointed star tube cross-section, the S Series is purpose-built for high-torque, high-horsepower<\/em> applications where shaft integrity is non-negotiable. Twelve models \u2014 from S6 through S50 \u2014 span an operating torque range of 1,450 Nm to 3,700 Nm, covering the most demanding implements in modern farming.<\/p>\n

Target sectors:<\/strong> Broadacre cropping, silage contracting, large-scale livestock operations, biomass harvesting, and heavy municipal maintenance.<\/p>\n

Defining features:<\/strong> Star-profile torsional lock \u00b7 Forged 42CrMo4 yokes \u00b7 Oversized cross kits (up to 50\u00d7118 mm) \u00b7 Full CE safety shield package \u00b7 Rated for continuous 540 and 1,000 RPM service.<\/p>\n

\"S<\/p>\n

S Series Specifications \u2013 Complete Torque & Dimensional Data<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Model<\/th>\nCross (mm)<\/th>\n540 RPM Kw<\/th>\n540 RPM Pk<\/th>\n540 RPM Nm<\/th>\n1000 RPM Kw<\/th>\n1000 RPM Pk<\/th>\n1000 RPM Nm<\/th>\nMP (NM)<\/th>\n<\/tr>\n<\/thead>\n
S6<\/td>\n30.2\u00d792<\/td>\n47<\/td>\n64<\/td>\n830<\/td>\n74<\/td>\n100<\/td>\n710<\/td>\n1450<\/td>\n<\/tr>\n
S7<\/td>\n30.2\u00d7106.5<\/td>\n55<\/td>\n75<\/td>\n970<\/td>\n87<\/td>\n118<\/td>\n830<\/td>\n1800<\/td>\n<\/tr>\n
S8<\/td>\n35\u00d7106.5<\/td>\n70<\/td>\n95<\/td>\n1240<\/td>\n110<\/td>\n150<\/td>\n1050<\/td>\n2250<\/td>\n<\/tr>\n
S38<\/td>\n38\u00d7105.6<\/td>\n78<\/td>\n105<\/td>\n1380<\/td>\n123<\/td>\n166<\/td>\n1175<\/td>\n2500<\/td>\n<\/tr>\n
S32<\/td>\n32\u00d776<\/td>\n39<\/td>\n53<\/td>\n695<\/td>\n61<\/td>\n83<\/td>\n580<\/td>\n1200<\/td>\n<\/tr>\n
S36<\/td>\n36\u00d789<\/td>\n66<\/td>\n90<\/td>\n1175<\/td>\n102<\/td>\n139<\/td>\n975<\/td>\n2000<\/td>\n<\/tr>\n
S9<\/td>\n41\u00d7108<\/td>\n88<\/td>\n120<\/td>\n1560<\/td>\n140<\/td>\n190<\/td>\n1340<\/td>\n2800<\/td>\n<\/tr>\n
S10<\/td>\n41\u00d7118<\/td>\n106<\/td>\n145<\/td>\n1905<\/td>\n170<\/td>\n230<\/td>\n1650<\/td>\n3500<\/td>\n<\/tr>\n
S42<\/td>\n42\u00d7104.5<\/td>\n79<\/td>\n107<\/td>\n1400<\/td>\n122<\/td>\n166<\/td>\n1175<\/td>\n2500<\/td>\n<\/tr>\n
S48<\/td>\n48\u00d7127<\/td>\n133<\/td>\n180<\/td>\n2390<\/td>\n205<\/td>\n277<\/td>\n1958<\/td>\n4200<\/td>\n<\/tr>\n
S50<\/td>\n50\u00d7118<\/td>\n119<\/td>\n162<\/td>\n2095<\/td>\n182<\/td>\n248<\/td>\n1740<\/td>\n3700<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The Science Behind Star-Profile PTO Tubes<\/h2>\n

The S Series star-profile tube features six symmetrically spaced lobes that interlock with matching recesses on the mating tube. This geometry creates a mechanical lock in the rotational plane, preventing any relative angular slippage between inner and outer tubes even under extreme shock loads. Compared to triangular or lemon profiles, the star cross-section provides:<\/p>\n