{"id":14456,"date":"2026-11-04T12:30:17","date_gmt":"2026-11-04T11:30:17","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&p=14456"},"modified":"2026-11-05T09:40:34","modified_gmt":"2026-11-05T08:40:34","slug":"borelli-group-3-through-shaft-speed-increaser-70000-series","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/borelli-group-3-through-shaft-speed-increaser-70000-series\/","title":{"rendered":"Borelli Group 3 Through-Shaft Speed Increaser – 70000 Series"},"content":{"rendered":"

Operating Principle and Applications<\/h3>\n

The Borelli Group 3 Through-Shaft Speed Increaser – 70000 Series<\/strong> is a precision mechanical component primarily used to connect gear pumps to the power take-offs of agricultural tractors. Since the standard output speed of tractor PTOs is 540 revolutions per minute (rpm), this device is essential for increasing that speed to the optimal operating speeds required by hydraulic pumps. The unit also supports different input speeds, provided that the output speed of the speed increaser does not exceed the maximum operating limit of 3000 rpm, ensuring flexibility and safety across various agricultural and industrial applications.<\/p>\n

Construction Features and Materials<\/h3>\n

Structural reliability is ensured through the use of high-quality materials. The external housings are manufactured from cast aluminium and cast iron, providing exceptional mechanical strength and protection for internal components. The core transmission system consists of gears designed in strict compliance with ISO\/DIN 3990-80 standards. Manufactured from high-grade UNI 18NiCrMo5 steel, these gears feature a corrected, low-profile tooth design: a specific engineering solution that provides greater resistance to peak loads and significantly reduces noise during operation. The shafts, which are essential for power transmission, are manufactured from UNI 16CrNi4 steel and connected to the gears through splined profiles, making them suitable for withstanding high torsional stresses.<\/p>\n

Performance and Operating Torque<\/h3>\n

The speed increaser is designed to ensure maximum efficiency under demanding operating conditions. The torque ratings specified in the catalogue refer to continuous-duty operation. However, the robust design allows additional operational flexibility: under intermittent-duty conditions, the specified torque ratings may be exceeded by up to 20%, providing a margin for sudden pressure peaks or temporary loads above normal operating levels. The nominal power rating for the entire series is 20 kW, with a relatively low weight of approximately 9.5 kg, making installation practical and secure.<\/p>\n

Lubrication and Maintenance<\/h3>\n

To ensure maximum service life and prevent excessive friction, the manufacturer recommends the proper use of SAE 90 oil. Routine maintenance requires a visual inspection of the oil level through the dedicated transparent sight glass every 1500 operating hours. It is also essential to perform the first oil change after the initial 60-80 hours of running-in and operation. During continuous operation, the operating temperature must never exceed 120\u00b0C to preserve the integrity of the lubricant and seals.<\/p>\n

Technical Summary Table of the Main Specifications of the Borelli Group 3 Through-Shaft Speed Increaser – 70000 Series<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Housing Material<\/td>\nCast aluminium and high-strength cast iron<\/td>\n<\/tr>\n
Gear Material<\/td>\nUNI 18NiCrMo5 Steel (ISO\/DIN 3990-80 Standards)<\/td>\n<\/tr>\n
Shaft Material<\/td>\nUNI 16CrNi4 Steel<\/td>\n<\/tr>\n
Maximum Permitted Output Speed<\/td>\n3000 rpm<\/td>\n<\/tr>\n
Permissible Overload for Intermittent Duty<\/td>\n+20%<\/td>\n<\/tr>\n
Recommended Oil Type<\/td>\nSAE 90<\/td>\n<\/tr>\n
Oil Level Inspection<\/td>\nEvery 1500 hours<\/td>\n<\/tr>\n
First Oil Change<\/td>\nAfter 60 – 80 hours<\/td>\n<\/tr>\n
Maximum Operating Temperature<\/td>\n120\u00b0C<\/td>\n<\/tr>\n
Power<\/td>\n20 kW<\/td>\n<\/tr>\n
Weight (G)<\/td>\n9.5 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Product Codes<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n
Model<\/th>\nPTO-Side Profile<\/th>\nPump-Side Profile<\/th>\n<\/tr>\n<\/thead>\n
70005<\/td>\nASAE 1″ 3\/8 Z 6 DIN 9611 A Profile<\/td>\nSpline \/ Standard Configuration<\/td>\n<\/tr>\n
70006<\/td>\nDIN 9611 A 1″ 3\/8 Z 6 Profile<\/td>\nDIN 5482 A 35×31 Profile<\/td>\n<\/tr>\n
70007<\/td>\nASAE 1″ 3\/8 Z 6 DIN 9611 Profile<\/td>\nExtended Through-Shaft Configuration<\/td>\n<\/tr>\n
70008<\/td>\nASAE 1″ 3\/8 Z 6 DIN 9611 Profile<\/td>\nQuick-Mount Flange<\/td>\n<\/tr>\n
70009<\/td>\nASAE 1″ 3\/8 Z 6 DIN 9611 A Profile<\/td>\nCompact Through-Shaft Connection<\/td>\n<\/tr>\n
70011<\/td>\nASAE 1″ 3\/8 Z 6 DIN 9611 \/ 9611A Profile<\/td>\nVariable Shaft Extension<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

The Borelli Group 3 Through-Shaft Speed Increaser – 70000 Series is designed to connect gear pumps to the power take-offs of agricultural tractors (540 rpm). Built with a cast aluminium and high-strength cast iron housing, it supports output speeds of up to 3000 rpm. It features UNI 18NiCrMo5 steel gears with a low-profile tooth design for exceptionally quiet operation. SAE 90 oil lubrication is required, with operating temperatures of up to 120\u00b0C.
\nThe available product codes are: 70005, 70006, 70007, 70008, 70009, 70011.<\/p>\n","protected":false},"featured_media":14120,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[508,140],"product_tag":[329],"class_list":{"0":"post-14456","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-speed-increasers","7":"product_cat-transmission-components-and-accessories-for-pumps","8":"product_tag-oleodinamica-borelli","10":"first","11":"instock","12":"shipping-taxable","13":"product-type-simple"},"yoast_head":"\nBorelli Group 3 Through-Shaft Speed Increaser - 70000 Series \u2013 LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Borelli Group 3 Through-Shaft Speed Increaser - 70000 Series for gear pumps. 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