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P.T.O Tractor Gearboxes

The gearboxes of the ML and B series are used mainly for connecting hydraulic pumps to the power take-offs of agricultural tractors. PTO output, standardized at either 540 or 1,000 rpm, is, in this way, increased to optimum operating speeds for the hydraulic pumps. RD series of gearboxes are used to reduce hydraulic motor speed.

ML and B series gearboxes provide the connection for hydraulic pumps to low speed tractor power take off. The standard power take off speed of 540 rpm, is increased by the gearbox ratio to optimal speed conditions required for the pump. Different inputs are accepted under condition that the output speeds don’t go over 3000 rpm.

The minimum and maximum temperature should not exceed -20°C and +80°C. The torque data given on the catalogue in the download area and on the below table refer to continuous duty conditions and can be increased by 25% in case of intermittent service. The calculations for gears were made as per ISO/DIN 3990-80 standard.

Proper lubrication is vital for good working performance and longer life time of the gearboxes. We suggest using lubricating oils with classification CLP/CC 150 (ISO 150) (SAE 90). The oil level must be constantly checked through the special level gauge. Oil has to be changed between the first 30 to 50 hours of use and subsequent changes at least every 12 months.

The below tables refer to an input speed of 540 rpm.

Model Single Pump	Power HP	Ratio i	Output Speed rpm	Input Torque Nm	Output Torque Nm	Model Two Pumps	Power HP	Ratio i	Output Speed rpm	Input Torque Nm	Output Torque Nm
ML32	12	2	1080	152	76	B502	48	1	540	634	317
ML32	12	3,8	2052	159	42	B502	58	1,5	81	768	256
ML32	13	2,5	1350	165	66	B502	66	2	1080	868	217
ML32	13	1,5	810	178	119	B502	66	3,8	2160	874	115
ML32	14	3	1680	180	58	B502	69	3,4	1836	904	133
ML32	14	3,5	1836	186	55	B582	70	3,4	1836	918	135
B580	24	1	540	317	317	B502	70	2,6	1408	925	178
B580	29	1,5	810	384	256	B582	71	1,	540	932	466
B580	33	2	1080	434	217	B582	71	2,6	1408	936	180
B580	33	3,8	2057	437	115	B582	71	4,8	2592	940	98
B580	34	3,4	1836	452	133	B582	72	4	2160	944	118
ML52	35	3,4	1836	459	135	B582	73	1,5	810	960	320
B580	35	2,6	1408	463	178	B502	73	3	1620	966	161
ML52	35	1	540	466	466	B582	73	2	1080	968	242
ML52	35	2,6	1408	468	180	B582	74	3	1620	978	163
ML52	36	4,8	2592	470	98	B602	103	1	540	1360	680
ML52	36	4	2160	472	118	B602	121	3,8	2030	1596	210
ML52	36	1,5	810	480	320	B602	123	1,5	810	1620	540
B580	37	3	1620	483	161	B602	125	2	1080	1648	412
ML52	37	2	1080	484	242	B602	130	3,4	1810	1720	253
ML52	37	3	1620	489	163	B602	133	2,6	1400	1756	338
B600	52	1	540	680	680	B602	136	3	1620	1788	298
B600	61	3,8	2030	798	210
B600	61	1,5	810	810	540
B600	62	2	1080	824	412
B600	65	3,4	1810	860	253
B600	67	2,6	1400	878	338
B600	68	3	1620	894	298


	PTO Gearbox Catalogue.pdf (4.43 MB)

	Hydrapp Gearbox Operating Instructions.pdf (198.13 KB)