{"id":14503,"date":"2026-11-04T12:28:13","date_gmt":"2026-11-04T11:28:13","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&p=14503"},"modified":"2026-11-05T10:04:07","modified_gmt":"2026-11-05T09:04:07","slug":"borelli-support-for-group-3-5-pumps-25405-25605-series","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/borelli-support-for-group-3-5-pumps-25405-25605-series\/","title":{"rendered":"Borelli Support for Group 3.5 Pumps – 25405\/25605 Series"},"content":{"rendered":"

Construction Features and Mechanical Design<\/h3>\n

The Borelli Support for Group 3.5 Pumps – 25405\/25605 Series<\/strong> is an advanced engineering solution for coupling hydraulic pumps. The central structure consists of a rigid housing (code 25005.1) that accommodates a high-precision power transmission system. Motion is transmitted through shafts available in the AC28 and AC03.5 variants, ensuring torque transmission without unwanted vibrations or mechanical play. The shaft features a spline connection compliant with the A40x36 DIN 5482 standard, ensuring full compatibility with leading motors and pumps used in the industry.<\/p>\n

Sealing and Fastening Components Compliant with UNI Standards<\/h3>\n

Hydraulic sealing is a crucial aspect of the Borelli Support for Group 3.5 Pumps – 25405\/25605 Series<\/strong> and is ensured by a multi-component system. The assembly uses an OR 185 O-ring combined with radial shaft seals measuring 55x72x8 and 40x52x7, which work together to seal the system and protect the internal mechanism against contamination. The mechanical locking system is based entirely on strict standardized specifications: fastening components include UNI 7435-55 Seeger retaining rings, UNI 6604 (8x7x45) and UNI 6606 (5×10) drive keys, as well as UNI 8839-B 16 lock washers combined with M16x1.5 hexagonal nuts.<\/p>\n

Configuration Differences Between the 25405 and 25605 Models<\/h3>\n

The 25405\/25605 Series is available in two specific configurations to meet different installation and load requirements. The 25405<\/strong> model features a shaft end with an M16x1.5 thread and a coupling diameter of 25 mm, designed to withstand loads of 374 daN and 293 daN. The 25605<\/strong> variant differs in its shaft end geometry, offering a connection with an M10 threaded hole and a 28 mm diameter with f7 tolerance, designed to withstand directional loads of 170 daN. Both versions share the same mounting hole center-to-center distances (148.3 mm and 114.2 mm) and a main centering diameter of 60.3 mm (H7 tolerance), ensuring housing interchangeability.<\/p>\n

Bearings and Load Capacity<\/h3>\n

The rotating assembly of the Borelli Support for Group 3.5 Pumps – 25405\/25605 Series<\/strong> is supported by high-performance 3211 Series bearings. These rolling elements significantly reduce friction and promote optimal heat dissipation during extended operating periods. Internal load distribution is designed to maximize component service life, making the entire support suitable for hydraulic power units, earthmoving machinery and industrial systems where mechanical reliability is essential.<\/p>\n

Technical Summary Table of the Main Specifications of the Borelli Support for Group 3.5 Pumps – 25405\/25605 Series<\/h3>\n
\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
Manufacturer<\/td>\nBorelli<\/td>\n<\/tr>\n
Pump Group<\/td>\nGroup 3.5<\/td>\n<\/tr>\n
Series<\/td>\n25405 \/ 25605<\/td>\n<\/tr>\n
Spline Profile<\/td>\nA40x36 DIN 5482<\/td>\n<\/tr>\n
Flange Centering Diameter<\/td>\n60.3 mm (H7 tolerance)<\/td>\n<\/tr>\n
Permissible Loads (25405 Model)<\/td>\n374 daN \/ 293 daN<\/td>\n<\/tr>\n
Permissible Loads (25605 Model)<\/td>\n170 daN<\/td>\n<\/tr>\n
Shaft End (25405 Model)<\/td>\n\u00d8 25 mm with M16x1.5 thread<\/td>\n<\/tr>\n
Shaft End (25605 Model)<\/td>\n\u00d8 28 mm (f7) with M10 thread<\/td>\n<\/tr>\n
Bearing Model<\/td>\n3211<\/td>\n<\/tr>\n
Key Standards<\/td>\nUNI 6604 \/ UNI 6606<\/td>\n<\/tr>\n
Seeger Retaining Ring Standard<\/td>\nUNI 7435-55<\/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\n\n\n\n\n\n\n
Code<\/th>\nComponent Description<\/th>\nQuantity per Assembly<\/th>\n<\/tr>\n<\/thead>\n
305572<\/td>\n55x72x8 shaft seal<\/td>\n1<\/td>\n<\/tr>\n
COP100<\/td>\nRing, dia. 100 mm<\/td>\n1<\/td>\n<\/tr>\n
428745<\/td>\n8x7x45 key UNI 6604<\/td>\n1<\/td>\n<\/tr>\n
401850<\/td>\nO-ring OR 185<\/td>\n1<\/td>\n<\/tr>\n
AC28<\/td>\nTapered shaft<\/td>\n1<\/td>\n<\/tr>\n
304052<\/td>\n40x52x7 shaft seal<\/td>\n1<\/td>\n<\/tr>\n
25005.1<\/td>\nHousing<\/td>\n1<\/td>\n<\/tr>\n
905500<\/td>\nSeeger retaining ring UNI 7435-55<\/td>\n2<\/td>\n<\/tr>\n
503211<\/td>\n3211 bearing<\/td>\n1<\/td>\n<\/tr>\n
601600<\/td>\nUNI 8839-B 16 washer<\/td>\n1<\/td>\n<\/tr>\n
601615<\/td>\nStandard M16x1.5 hexagonal nut<\/td>\n1<\/td>\n<\/tr>\n
AC03.5<\/td>\nTapered shaft<\/td>\n1<\/td>\n<\/tr>\n
700510<\/td>\n5×10 Woodruff key UNI 6606<\/td>\n1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

The Borelli Support for Group 3.5 Pumps – 25405\/25605 Series is a mechanical component designed to ensure stability and precise connections in high-performance hydraulic systems. The main structure incorporates different shaft configurations to meet specific mounting requirements, supported by robust 3211 Series bearings and calibrated sealing rings to prevent fluid leakage. The system is capable of withstanding demanding dynamic loads, resisting forces of 170 daN, 293 daN and up to 374 daN depending on the point of application.
\nThe available component codes are: 305572, COP100, 428745, 401850, AC28, 304052, 25005.1, 905500, 503211, 601600, 601615, AC03.5, 700510.<\/p>\n","protected":false},"featured_media":14400,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[511,140],"product_tag":[329],"class_list":{"0":"post-14503","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-supports","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 Support for Group 3.5 Pumps - 25405\/25605 Series \u2013 LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Optimize your hydraulic systems with the Borelli Support for Group 3.5 Pumps - 25405\/25605 Series. Tapered shafts, 3211 bearings and O-ring seals. Loads up to 374 daN.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lubeteam.it\/en\/product\/borelli-support-for-group-3-5-pumps-25405-25605-series\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Borelli Support for Group 3.5 Pumps - 25405\/25605 Series\" \/>\n<meta property=\"og:description\" content=\"Optimize your hydraulic systems with the Borelli Support for Group 3.5 Pumps - 25405\/25605 Series. Tapered shafts, 3211 bearings and O-ring seals. 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