{"id":12025,"date":"2026-03-24T08:37:25","date_gmt":"2026-03-24T08:37:25","guid":{"rendered":"https:\/\/pto-gearbox.xyz\/?post_type=product&p=12025"},"modified":"2026-03-24T08:37:28","modified_gmt":"2026-03-24T08:37:28","slug":"rotary-mower-pto-gearbox-replacement-for-comer-lf-205j","status":"publish","type":"product","link":"https:\/\/pto-gearbox.xyz\/ja\/product\/rotary-mower-pto-gearbox-replacement-for-comer-lf-205j\/","title":{"rendered":"\u30ed\u30fc\u30bf\u30ea\u30fc\u30e2\u30a2\u7528PTO\u30ae\u30a2\u30dc\u30c3\u30af\u30b9\uff5cComer LF-205J\u306e\u4ea4\u63db\u90e8\u54c1"},"content":{"rendered":"
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Rotary Mower PTO Gearbox Overview<\/h2>\n

The LF205J is a compact rotary mower PTO gearbox<\/b> rated at 30 HP (22 kW) with a 1:1.92 speed-increasing ratio. At 540 RPM PTO input, the output reaches approximately 1,037 RPM through the ASA Z12 sprocket shaft \u2014 matching the blade speed requirements of light-to-medium duty rotary mower decks used on smaller Korean farms, orchards, and municipal grounds. The GGG40 ductile cast iron housing weighs just 16 kg with a 0.8 L oil reservoir, making it one of the lighter cast iron PTO\u30ae\u30a2\u30dc\u30c3\u30af\u30b9<\/b> units in the LF series.<\/p>\n

\"Rotary<\/p>\n

Manufactured as a direct replacement for the Comer LF-205J, this \u8fb2\u696d\u7528PTO\u30ae\u30a2\u30dc\u30c3\u30af\u30b9<\/b> matches all critical dimensions: 1 3\/8-inch 6-spline input, ASA Z12 D.P. 8\/16 sprocket output with 40 mm bore, and original mounting bolt pattern. The output torque rating of 20 daNm in increasing mode is sized for 20-30 HP compact tractors \u2014 the most common tractor class on Korean specialty crop farms and small-scale livestock operations. Korea Ever-Power stocks this model for 2-4 day delivery nationwide.<\/p>\n<\/div>\n

\u6280\u8853\u4ed5\u69d8<\/h2>\n
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\"rotary-mower-pto-gearbox-lf205j-dimensions-1\"<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
\u5fdc\u7528<\/td>\nMowers<\/td>\n<\/tr>\n
Max. Input Power<\/td>\n22 kW \/ 30 HP<\/td>\n<\/tr>\n
Ratio (Increasing)<\/td>\n1 : 1.92<\/td>\n<\/tr>\n
Ratio (Reducing)<\/td>\n1.92 : 1<\/td>\n<\/tr>\n
Output Torque (Increasing)<\/td>\n20 daNm<\/td>\n<\/tr>\n
Shaft X (Input)<\/td>\n1 3\/8″ (6) Z6<\/td>\n<\/tr>\n
Shaft Z (Output)<\/td>\nASA Z12 D.P. 8\/16, \u00d840 mm<\/td>\n<\/tr>\n
\u30cf\u30a6\u30b8\u30f3\u30b0\u6750<\/td>\nCast Iron GGG40<\/td>\n<\/tr>\n
Oil Capacity<\/td>\n0.8 L (80W-90)<\/td>\n<\/tr>\n
Oil Change Interval<\/td>\n500 h<\/td>\n<\/tr>\n
\u91cd\u3055<\/td>\n16 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

How This PTO Gearbox Works<\/h2>\n

The tractor PTO delivers 540 RPM through a driveshaft to the LF205J’s 1 3\/8-inch 6-spline input. Inside the GGG40 housing, a spiral bevel gear pair redirects the power 90 degrees while increasing the speed by a factor of 1.92. The output shaft \u2014 an ASA Z12 sprocket profile with a 40 mm bore \u2014 engages directly with the mower deck’s chain drive system, eliminating the need for a separate coupling sprocket. This sprocket output design is specific to the LF series and is the primary reason these gearboxes are not interchangeable with standard cylindrical-output models, even when the ratio and power rating are similar. The 0.8-litre oil reservoir provides oil bath lubrication to the gear contact zone and bearings, with adequate thermal capacity for the 30 HP continuous duty cycle.<\/p>\n

\"rotary-mower-pto-gearbox-lf205j-product-combo-1\"<\/p>\n

\"rotary-mower-pto-gearbox-lf205j-application-combo-1\"<\/p>\n

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Installation and Maintenance<\/h2>\n