{"id":9905,"date":"2025-04-23T01:50:07","date_gmt":"2025-04-23T01:50:07","guid":{"rendered":"https:\/\/www.skf-eu.com\/?post_type=product&p=9905"},"modified":"2025-04-24T08:17:21","modified_gmt":"2025-04-24T08:17:21","slug":"radial-spherical-plain-bearings","status":"publish","type":"product","link":"https:\/\/www.skf-eu.com\/ms\/product\/radial-spherical-plain-bearings\/","title":{"rendered":"Radial spherical plain bearings"},"content":{"rendered":"

1. Overview of Radial Spherical Plain Bearings<\/strong><\/h2>\n

\"Radial<\/p>\n

Definition:<\/strong><\/h3>\n

A radial spherical plain bearings<\/strong>\u00a0<\/a>(Self-aligning Radial Plain Bearing) are the type of sliding bearing that allows a certain angular error between the shaft and the bearing seat (usually 2-3\u00b0). It can achieve self-alignment through its spherical structure and compensate for the effects of installation errors or shaft bending.<\/p>\n

Structural features:<\/strong><\/h3>\n

Inner ring: spherical outer diameter, tightly matched with the bearing seat.<\/p>\n

Outer ring: spherical inner diameter, matched with the shaft neck.<\/p>\n

Sliding material: usually steel back composite material and copper\/PTFE material or coating are used to reduce the friction coefficient.<\/p>\n

2. Common models and size parameter table<\/strong><\/h2>\n

1. Standard model examples (taking GE series as an example)<\/strong><\/h3>\n\n\n\n\n\n\n\n
Model<\/th>\nInner diameter (mm)<\/th>\nOuter diameter (mm)<\/th>\nWidth (mm)<\/th>\nLoad Capacity (kN)<\/th>\nAllowable deflection angle (\u00b0)<\/th>\nMaterial combination<\/th>\n<\/tr>\n<\/thead>\n
GE20ES<\/td>\n20<\/td>\n42<\/td>\n20<\/td>\n12.5<\/td>\n2.5<\/td>\nSteel back + PTFE<\/td>\n<\/tr>\n
GE30C<\/td>\n30<\/td>\n55<\/td>\n25<\/td>\n25.0<\/td>\n3.0<\/td>\nSteel back + copper alloy<\/td>\n<\/tr>\n
GE50ES-2RS<\/td>\n50<\/td>\n50<\/td>\n36<\/td>\n50.0<\/td>\n2.0<\/td>\nSealed + PTFE<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2. Comparison with other series<\/strong><\/h3>\n

SA series: suitable for heavy-duty applications, with a larger outer diameter (for example, SA40, inner diameter 40mm, outer diameter 80mm).<\/p>\n

GEC series: with flange design, suitable for occasions requiring axial positioning.<\/p>\n

Common brands:<\/strong><\/h3>\n

We have these brand of Spherical Sliding Bearings<\/strong><\/a> now:-<\/p>\n

SKF radial spherical sliding bearing
\nFAG radial spherical sliding bearing
\nNSK radial spherical sliding bearing
\nKOYO radial spherical sliding bearing
\nTIMKEN radial spherical sliding bearing
\nINA radial spherical sliding bearing
\nNTN radial spherical sliding bearing<\/p>\n

3. Application analysis<\/strong><\/h2>\n

1. Typical application scenarios<\/strong><\/h3>\n

Engineering machinery: such as the hinge point of the excavator arm, compensating for the deformation of the structure.<\/p>\n

Agricultural equipment: For example, the drive shaft of the harvester adopts a dustproof seal design.<\/p>\n

\"Tractor<\/p>\n

Industrial transmission: such as the roller of the paper machine, using corrosion-resistant coating materials.<\/p>\n

\"Drum<\/p>\n

2. Selection points<\/strong><\/h3>\n

Load: When the dynamic load is greater than the static load, copper-based materials should be preferred.<\/p>\n

Speed: PTFE bushings are suitable for high-speed applications (<500rpm), while copper alloys are more suitable for low-speed and high-load working conditions.<\/p>\n

Environment: In a humid environment, it is recommended to choose a stainless steel housing and sealing design (such as GE…ES-2RS).<\/p>\n

4. FAQ<\/strong><\/h2>\n

Q1: How to determine whether the bearing needs lubrication?
\nNon-self-lubricating models (such as GE30C) require regular addition of lithium-based grease; while self-lubricating models (models with the “ES” suffix) do not require maintenance.
\nQ2: What is the maximum allowable misalignment angle during installation?
\nGenerally 2-3\u00b0. If this range is exceeded, it may cause edge stress concentration, thereby shortening the bearing life.
\nQ3: What may be the cause of abnormal noise from the bearing?
\nPossible reasons include:
\n\u2460 Insufficient lubrication;
\n\u2461 Dust ingress;
\n\u2462 Wear of spherical coating (needs to be replaced).
\nQ4: What is the advantage of radial spherical sliding bearings compared to spherical roller bearings?
\nIt has strong impact resistance and anti-pollution ability, but is suitable for lower speeds.<\/p>\n

5. Maintenance recommendations<\/strong><\/h2>\n

Regular inspection: Check the wear every 6 months, especially for bearings in heavy-duty applications.
\nLubrication cycle: Non-self-lubricating models need to be re-greased after every 500 hours of work.
\nReplacement criteria: When the radial clearance exceeds 0.15mm or plating peeling occurs, the bearing needs to be replaced.<\/p>","protected":false},"excerpt":{"rendered":"

Core advantages of radial spherical plain bearings<\/strong><\/p>\n

\u2714 Self-aligning \u2013 adapts to shaft deflection, reduces edge stress and prolongs life.
\n\u2714 Impact resistance \u2013 sliding friction structure is more resistant to vibration and impact loads than rolling bearings.
\n\u2714 Anti-pollution \u2013 sealed design (such as PTFE bushing) is suitable for harsh environments such as dust and moisture.
\n\u2714 Maintenance-free (optional) \u2013 self-lubricating models do not require frequent greasing, reducing maintenance costs.
\n\u2714 High load \u2013 steel back + copper alloy\/polymer bushing design, suitable for low-speed and heavy-load conditions.<\/p>\n

Typical applications<\/strong>
\n\ud83d\udd27 Construction machinery \u2013 excavator arm hinge point, crane swivel support (compensation for structural deformation).
\n\ud83c\udf3e Agricultural machinery \u2013 tractor drive shaft, harvester connecting rod (resistant to mud, water, sand and dust).
\n\ud83c\udfed Industrial equipment \u2013 \u200b\u200bpaper machine drum, conveyor belt roller (corrosion-resistant, rust-proof coating).
\n\u26a1 Heavy industry \u2013 metallurgical mills, mining crushers (high impact + slow speed heavy load).<\/p>","protected":false},"featured_media":9906,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[244,258],"product_tag":[259],"yoast_head":"\nChina Wholesale Radial spherical plain bearings Supplier - Comdale Bearing<\/title>\n<meta name=\"description\" content=\"As Professional Radial spherical plain 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\/ms\/product\/radial-spherical-plain-bearings\/\" \/>\n<meta property=\"og:locale\" content=\"ms_MY\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"China Wholesale Radial spherical plain bearings Supplier - Comdale Bearing\" \/>\n<meta property=\"og:description\" content=\"As Professional Radial spherical plain bearings distributor , Comdale supply Roller Bearings, Ball Bearings, Plain Bearing, Slewing Ring Bearings, Combined Bearings, Linear Bearings\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.skf-eu.com\/ms\/product\/radial-spherical-plain-bearings\/\" \/>\n<meta property=\"og:site_name\" content=\"Comdale Bearing\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-24T08:17:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/04\/Radial-spherical-plain-bearings-1.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"338\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.skf-eu.com\/product\/radial-spherical-plain-bearings\/\",\"url\":\"https:\/\/www.skf-eu.com\/product\/radial-spherical-plain-bearings\/\",\"name\":\"China Wholesale Radial spherical plain bearings Supplier - 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