{"id":840,"date":"2026-03-19T04:03:25","date_gmt":"2026-03-19T04:03:25","guid":{"rendered":"https:\/\/ptoparts.top\/product\/pto-drive-shaft-g-series-german-standard-round-tube-agricultural-pto-shaft\/"},"modified":"2026-03-19T04:03:42","modified_gmt":"2026-03-19T04:03:42","slug":"pto-drive-shaft-g-series-german-standard-round-tube-agricultural-pto-shaft","status":"publish","type":"product","link":"https:\/\/ptoparts.top\/zh\/product\/pto-drive-shaft-g-series-german-standard-round-tube-agricultural-pto-shaft\/","title":{"rendered":"PTO Drive Shaft G Series \u2013 German Standard Round Tube Agricultural PTO Shaft"},"content":{"rendered":"

G Series PTO Drive Shaft \u2013 German-Standard Round Tube for Precision Power Transfer<\/h2>\n

The G Series PTO drive shaft<\/strong> is built around the German-standard round tube profile<\/em> \u2014 the same geometry specified by leading European driveline engineers. Round tubes provide the most concentric and balanced rotating assembly of any PTO shaft design, minimizing vibration and maximizing bearing life in both the shaft and the driven implement’s gearbox. Ten models spanning G2 to G50 deliver torques from 450 Nm to 3,700 Nm, covering everything from mid-range disc mowers to large-scale forage processing equipment.<\/p>\n

Preferred industries:<\/strong> Precision agriculture, dairy farming, grain harvesting, biomass processing, municipal works, and industrial power take-off applications.<\/p>\n

At a glance:<\/strong> Precision-ground round tubes \u00b7 German DIN standard tolerances \u00b7 Forged yokes with induction-hardened splines \u00b7 Sealed heavy-duty cross kits \u00b7 Complete CE safety shield assembly.<\/p>\n

\"G<\/p>\n

G Series Full Specification Table<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Model<\/th>\nCross (mm)<\/th>\nOuter Tube<\/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
G2<\/td>\n23.8\u00d761.3<\/td>\n50\u00d72.5 G35-18<\/td>\n15<\/td>\n21<\/td>\n270<\/td>\n23<\/td>\n31<\/td>\n220<\/td>\n450<\/td>\n<\/tr>\n
G4<\/td>\n27\u00d774.6<\/td>\n50\u00d72.5 G35-18<\/td>\n26<\/td>\n35<\/td>\n460<\/td>\n40<\/td>\n55<\/td>\n380<\/td>\n780<\/td>\n<\/tr>\n
G5<\/td>\n30.2\u00d780<\/td>\n\u2014<\/td>\n35<\/td>\n47<\/td>\n620<\/td>\n54<\/td>\n74<\/td>\n520<\/td>\n1050<\/td>\n<\/tr>\n
G6<\/td>\n30.2\u00d792<\/td>\n60\u00d73 G40-14<\/td>\n47<\/td>\n64<\/td>\n830<\/td>\n74<\/td>\n100<\/td>\n710<\/td>\n1450<\/td>\n<\/tr>\n
G7<\/td>\n30.2\u00d7106.5<\/td>\n\u2014<\/td>\n55<\/td>\n75<\/td>\n970<\/td>\n87<\/td>\n118<\/td>\n830<\/td>\n1800<\/td>\n<\/tr>\n
G8<\/td>\n35\u00d7106.5<\/td>\n65\u00d73.5 G45-16<\/td>\n70<\/td>\n95<\/td>\n1240<\/td>\n110<\/td>\n150<\/td>\n1050<\/td>\n2250<\/td>\n<\/tr>\n
G38<\/td>\n38\u00d7105.6<\/td>\n65\u00d73.5 G45-16<\/td>\n78<\/td>\n105<\/td>\n1380<\/td>\n123<\/td>\n166<\/td>\n1175<\/td>\n2500<\/td>\n<\/tr>\n
G42<\/td>\n42\u00d7104.5<\/td>\n\u2014<\/td>\n79<\/td>\n107<\/td>\n1400<\/td>\n122<\/td>\n166<\/td>\n1175<\/td>\n2500<\/td>\n<\/tr>\n
G50<\/td>\n50\u00d7118<\/td>\n75\u00d74 G55-20<\/td>\n119<\/td>\n162<\/td>\n2095<\/td>\n182<\/td>\n248<\/td>\n1740<\/td>\n3700<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

How Round-Tube PTO Shafts Achieve Superior Balance<\/h2>\n

Unlike profiled tubes (triangular, lemon, star) that rely on geometric interlocking for torque transfer, the G Series round tube transmits torque via a precision keyway or spline<\/strong> machined along the inner bore. The advantage is perfect concentricity<\/em> \u2014 round tubes can be ground to surface finishes below Ra 1.6 \u00b5m, ensuring the rotating assembly is as balanced as a machined crankshaft. This balance translates directly into reduced vibration at the tractor PTO bearing, lower noise at the operator’s station, and extended gearbox input-shaft bearing life on the implement.<\/p>\n

Complete assembly components:<\/strong> Tractor-end yoke (push pin or quick release) \u00b7 Outer round tube with welded yoke \u00b7 Inner round tube with welded yoke \u00b7 Implement-end yoke \u00b7 Precision cross kits with quad-lip seals \u00b7 Safety shield assembly (inner & outer guard cones and tubes) \u00b7 Safety chains \u00b7 Spring pin hardware.<\/p>\n

\"G<\/p>\n

Advantages That Define the G Series<\/h2>\n
\n
\n⚙<\/span><\/p>\n

Precision Ground Tubes<\/h3>\n

Outer diameter ground to h8 tolerance and inner bore to H8 provides a sliding fit with minimal radial play \u2014 essential for high-speed 1,000 RPM applications.<\/p>\n<\/div>\n

\n📈<\/span><\/p>\n

Vibration-Free Operation<\/h3>\n

Round geometry eliminates the inherent mass imbalance of profiled tubes, resulting in less than 0.5 mm\/s vibration at rated RPM on properly aligned installations.<\/p>\n<\/div>\n

\n🛡<\/span><\/p>\n

European DIN Standard<\/h3>\n

Tube dimensions follow German DIN standards (G35, G40, G45, G55 series), ensuring seamless interchangeability with European OEM equipment.<\/p>\n<\/div>\n

\n🔨<\/span><\/p>\n

Quad-Lip Sealed Crosses<\/h3>\n

Cross kits feature four-lip contact seals that provide double the sealing area of standard single-lip designs, extending service life in wet or dusty environments.<\/p>\n<\/div>\n

\n🛠<\/span><\/p>\n

Versatile Torque Range<\/h3>\n

From the compact G2 at 450 Nm to the robust G50 at 3,700 Nm, the G Series covers virtually every PTO-driven machine in a modern fleet.<\/p>\n<\/div>\n<\/div>\n

Construction Details & Material Grades<\/h2>\n

G Series round tubes are manufactured from seamless E355+SR (EN 10305-1) precision steel tubing, which is then ground on the OD and honed on the ID to achieve the tight clearance fit required for smooth telescoping under load. The keyway is broached to DIN 6885 profile. Yokes are produced from 42CrMo4 (AISI 4140) drop forgings, normalized at 860 \u00b0C, quenched, and tempered to achieve a tensile strength of 1,000 MPa. Bearing bores are induction-hardened to HRC 60. Cross kits use 100Cr6 (AISI 52100) bearing steel with a surface hardness of HRC 62, ensuring maximum rolling contact fatigue resistance. All zinc plating meets ISO 4042 Class A requirements with a minimum 12 \u00b5m coating thickness for outdoor corrosion resistance.<\/p>\n

Application Guide \u2013 Where the G Series Excels<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Equipment<\/th>\nModel Range<\/th>\nApplication Insight<\/th>\n<\/tr>\n<\/thead>\n
High-Speed Disc Mower<\/td>\nG4 \u2013 G6<\/td>\nMowers running at 1,000 RPM demand the balance and low vibration that only a round-tube shaft provides.<\/td>\n<\/tr>\n
Precision Planter<\/td>\nG2 \u2013 G5<\/td>\nSeed metering accuracy depends on smooth, jerk-free PTO input; G Series round tubes deliver exactly that.<\/td>\n<\/tr>\n
Center-Pivot Irrigator Drive<\/td>\nG5 \u2013 G7<\/td>\nLong continuous run times at moderate torque; ground tubes resist wear for thousands of operating hours.<\/td>\n<\/tr>\n
Combine Header Drive<\/td>\nG6 \u2013 G38<\/td>\nCutting header demands instant torque response and minimal driveline backlash \u2014 hallmarks of the G Series.<\/td>\n<\/tr>\n
Slurry Tanker Pump<\/td>\nG38 \u2013 G50<\/td>\nPumping viscous slurry at high flow rates requires sustained torque; the G50 handles peak loads effortlessly.<\/td>\n<\/tr>\n
Industrial Generator Drive<\/td>\nG7 \u2013 G42<\/td>\nPTO-driven generators need the lowest possible vibration to maintain stable electrical output frequency.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\"G<\/p>\n

Selecting the Ideal G Series Model<\/h2>\n
    \n
  1. Confirm the implement’s German tube standard:<\/strong> Check the implement manual for the existing tube designation (e.g., G35-18, G40-14, G45-16, G55-20). Match this to the G Series spec table.<\/li>\n
  2. Verify torque demand:<\/strong> Cross-reference the implement’s required input power (kW) and PTO speed with the G Series torque columns.<\/li>\n
  3. Measure installation geometry:<\/strong> Record minimum and maximum centre-to-centre distances. Ensure adequate telescopic overlap (minimum one-third of tube engagement length).<\/li>\n
  4. Identify connection types:<\/strong> Specify spline profile and yoke style for both tractor and implement ends. Common options include 1-3\/8" 6-spline, 1-3\/8" 21-spline, 1-3\/4" 6-spline, and 1-3\/4" 20-spline.<\/li>\n
  5. Assess speed sensitivity:<\/strong> If the driven implement is speed-sensitive (generators, precision planters), the G Series round tube is the preferred choice over any profiled alternative.<\/li>\n
  6. Plan maintenance access:<\/strong> Ensure grease fittings on cross kits are accessible after installation for routine lubrication.<\/li>\n<\/ol>\n

    For complex multi-shaft or custom-length requirements, contact our technical department<\/a> directly.<\/p>\n

    Brand Replacement Compatibility<\/h2>\n

    The G Series is engineered as a dimensional equivalent<\/strong> for round-tube PTO shafts from these respected manufacturers:<\/p>\n