{"id":10190,"date":"2025-05-22T06:38:32","date_gmt":"2025-05-22T06:38:32","guid":{"rendered":"https:\/\/www.skf-eu.com\/?post_type=product&p=10190"},"modified":"2025-05-22T06:38:52","modified_gmt":"2025-05-22T06:38:52","slug":"four-point-contact-ball-bearings","status":"publish","type":"product","link":"https:\/\/www.skf-eu.com\/es\/producto\/four-point-contact-ball-bearings\/","title":{"rendered":"Rodamientos de bolas de cuatro puntos de contacto"},"content":{"rendered":"

Technical analysis of four-point angular contact ball bearings<\/strong><\/h2>\n

Productos<\/strong><\/h3>\n

Four-point angular contact ball bearings<\/strong><\/a> adopt a unique four-point contact design. By optimizing the raceway geometry, the single-row steel ball forms four contact points with the inner and outer rings. This innovative structure enables it to have bidirectional axial load capacity and can withstand significant radial loads, and performs well in high-performance applications with limited space.<\/p>\n

Core features<\/strong><\/h3>\n

Multi-directional load-bearing advantage<\/strong><\/p>\n

Synchronously bear bidirectional axial and radial forces<\/p>\n

Axial load capacity is increased by more than 35% compared with standard angular contact bearings<\/p>\n

Space optimization design<\/strong><\/p>\n

Single-row structure realizes double-row bearing function<\/p>\n

Cross-section height is reduced by 20%, suitable for compact equipment<\/p>\n

Precision motion control<\/strong><\/p>\n

Contact angle is optimized to 35\u00b0 to achieve low vibration operation<\/p>\n

Rotation accuracy can reach P4 level (ABEC7)<\/p>\n

High performance<\/strong><\/p>\n

Limiting speed is 15-20% higher than ordinary bearings<\/p>\n

Special cage design reduces friction temperature rise<\/p>\n

Marcas comunes<\/strong><\/h3>\n

SKF four-point angular contact ball bearings
\nNSK four-point angular contact ball bearings
\nNTN four-point angular contact ball bearings
\nFAG four-point angular contact ball bearings
\nKOYO four-point angular contact ball bearings
\nINA four-point angular contact ball bearings
\nTIMKEN four-point angular contact ball bearings
\nNACHI four-point angular contact ball bearings<\/p>\n

Typical technical parameters<\/strong><\/h3>\n\n\n\n\n\n\n\n
Modelo<\/th>\nDi\u00e1metro interior (mm)<\/th>\nDi\u00e1metro exterior (mm)<\/th>\nAnchura (mm)<\/th>\nCarga din\u00e1mica (kN)<\/th>\nCarga est\u00e1tica (kN)<\/th>\nVelocidad l\u00edmite (rpm)<\/th>\nAplicaci\u00f3n principal<\/th>\n<\/tr>\n<\/thead>\n
QJ204<\/td>\n20<\/td>\n47<\/td>\n14<\/td>\n12.8<\/td>\n7.8<\/td>\n9000<\/td>\nMachine tool spindle<\/td>\n<\/tr>\n
QJ306<\/td>\n30<\/td>\n72<\/td>\n19<\/td>\n25.6<\/td>\n16.2<\/td>\n7500<\/td>\nIndustrial robot<\/td>\n<\/tr>\n
QJ212<\/td>\n60<\/td>\n110<\/td>\n22<\/td>\n48.5<\/td>\n32.4<\/td>\n6000<\/td>\nWind power variable pitch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Escenarios t\u00edpicos de aplicaci\u00f3n<\/strong><\/h3>\n

Precision transmission system<\/strong>
\nCNC machine tool electric spindle adopts ceramic hybrid four-point contact bearing to achieve 20,000rpm ultra-high-speed cutting<\/p>\n

New energy equipment<\/strong>
\nPhotovoltaic tracking system is equipped with sealed four-point contact bearings, which can withstand temperature changes from -30\u2103 to 80\u2103<\/p>\n

Intelligent logistics equipment<\/strong>
\nAutomated sorting line turntable bearings integrate four-point contact design to achieve a high cycle life of 2 million times\/year<\/p>\n

Special vehicles<\/strong>
\nMilitary off-road vehicle wheel hub units adopt reinforced four-point contact bearings, and the impact load capacity is increased by 50%<\/p>\n

\"four-point\"four-point \"four-point<\/p>\n

Preguntas y respuestas t\u00e9cnicas<\/strong><\/h3>\n

Q1 What are the advantages compared with cross roller bearings?
\nFour-point contact ball bearings have a 40% lower friction coefficient, which is more suitable for high-speed scenarios and has lower maintenance costs.<\/p>\n

Q2 Extreme operating temperature range?
\nStandard type: -30\u2103~120\u2103
\nHigh temperature type (special heat treatment): -50\u2103~150\u2103<\/p>\n

Q3 Preload adjustment suggestions?
\nThe axial clearance is controlled at 0.02-0.05mm, and interference fit will significantly affect the bearing life<\/p>\n

Q4 Failure warning indicator?
\nWhen the vibration value is greater than 4.5mm\/s or the temperature rise is greater than 15\u2103, the machine should be stopped for inspection immediately<\/p>\n

Technical summary<\/strong><\/h3>\n

The four-point angular contact ball bearing<\/strong><\/a> perfectly solves the problem of coordinated bearing of bidirectional axial load and radial load through an innovative four-point contact mechanical model. With the development of material surface treatment technology (such as DLC coating) and intelligent lubrication system, its application in cutting-edge fields such as aerospace and precision medical equipment continues to expand, becoming the core component of modern precision transmission systems.<\/p>","protected":false},"excerpt":{"rendered":"

Aplicaciones:<\/strong><\/p>\n

Machine tool spindle (high-speed precision machining).<\/p>\n

Industrial robots (joint parts).<\/p>\n

Aerospace (gearbox, transmission system).<\/p>\n

Automotive steering system (electric power steering).<\/p>\n

Compressor\/pump (high axial load occasions).<\/p>\n

Advantages and features:<\/strong><\/p>\n

Bidirectional load: a single bearing can withstand bidirectional axial forces, simplifying the design.<\/p>\n

High rigidity: four-point contact structure enhances load distribution and reduces deformation.<\/p>\n

High-speed performance: optimized raceway design, suitable for high-speed rotation.<\/p>\n

Compact design: replace double-row bearings to save space.<\/p>\n

High precision: suitable for equipment with strict requirements on rotation accuracy.<\/p>\n

Suitable for occasions requiring high load capacity, high rigidity and compact layout.<\/p>","protected":false},"featured_media":10194,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[256,244],"product_tag":[],"yoast_head":"\nChina Wholesale Four-Point Contact Ball Bearings Supplier - Comdale Bearing<\/title>\n<meta name=\"description\" content=\"As Professional Four-Point Contact Ball Bearings distributor , Comdale supply Roller Bearings, Ball Bearings, Plain Bearing, Slewing Ring Bearings, Combined Bearings, Linear Bearings\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.skf-eu.com\/es\/producto\/four-point-contact-ball-bearings\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"China Wholesale Four-Point Contact Ball Bearings Supplier - 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