NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
A Tapered Roller Bearing Cage, also known as a tapered roller bearing retainer, is a core functional component of tapered roller bearings. Its primary role is to evenly separate tapered rollers according to a conical angle, guide the rollers to roll precisely within the conical raceways of the inner and outer rings, prevent wear caused by mutual extrusion and friction between rollers, and optimize the transmission path of combined axial and radial loads. It is a key guarantee for tapered roller bearings to adapt to heavy-load and oblique-load scenarios. It’s bearing cage design must strictly match the taper (usually 1:12-1:30) and contact angle (10°-30°) of the tapered rollers. Through the structural design of "wedge-shaped pockets + guide ribs", it can increase the bearing’s axial load-carrying capacity by 15%-20% and rotational accuracy by 30% under the same working conditions. As a professional manufacturer of bearings and accessories, NEWBEE Transmission’s Tapered Roller Bearing Cages are compatible with bearings with inner diameters ranging from 20mm to 800mm. Customizable bearing cage material (such as steel cage bearings and brass cage bearings) is available, and they are widely used in automotive axles, heavy machinery, mining equipment, and other fields with strict requirements for combined loads and stability, fully demonstrating in-depth mastery of the technology for core components of tapered roller bearings.
1. Combined Load Adaptability: Through the bearing cage design of "wedge-shaped pockets + conical guide ribs", Tapered Roller Bearing Cages can withstand combined axial and radial loads simultaneously, adapting to scenarios with an oblique load coefficient ≤1.5. The steel cage bearing (stamped steel cage) from NEWBEE Transmission adopts a double-guide rib structure, which can evenly distribute axial force to the raceways. Under the working condition of 200kN axial load on automotive axles, the wear rate is controlled at <0.01mm/1000h, far lower than the 0.03mm standard of ordinary cages. The brass cage bearing (turned brass cage), with excellent rigidity, can maintain stable pocket dimensions under a 300kN radial load in mining equipment, avoiding bearing jamming caused by roller deviation.
2.High-Precision Taper Matching: Relying on precision processing technology, the matching error between the pocket taper and the roller taper of the Tapered Roller Bearing Cage is ≤0.05°, and the contact angle deviation is ≤1°, ensuring the line contact accuracy between the rollers and the raceways. Through five-axis linkage machining (tolerance ±0.02mm), NEWBEE Transmission ensures that the pocket taper consistency of brass cage bearings reaches 99.9%. When used with P4-grade tapered roller bearings, it can achieve a radial runout of ≤0.005mm and an end face runout of ≤0.008mm, meeting the high-precision requirements of precision machine tool spindles. The Silver-plated cage bearing (silver-plated cage) adds oxidation resistance on the basis of high precision, adapting to precision transmission scenarios in humid environments.
3.Enhanced High-Speed Stability: For high-speed scenarios, the bearing cage design of Tapered Roller Bearing Cages incorporates the concept of centrifugal force optimization. For example, the maximum rotational speed of PEEK composite material cages (suitable for high-speed motors) can reach 6000rpm, which is 100% higher than that of traditional steel cage bearings (3000rpm), and the deformation caused by centrifugal force is ≤0.01mm. Through the "lightweight pocket + reinforcing rib" structure, the brass cage bearing controls the vibration value to ≤0.1mm TIR under 4000rpm, far better than the 0.2mm standard of ordinary steel cages, making it the preferred accessory for high-speed tapered roller bearings.
4. Multi-Scenario Environmental Adaptability: Different bearing cage materials have different environmental adaptability: - Steel cage bearings can withstand temperatures up to 250℃ after carburizing treatment, adapting to medium-high temperature scenarios such as automotive gearboxes and metallurgical equipment. - Brass cage bearings have better corrosion resistance than steel cages, reducing the rust rate by 60% under humid working conditions. - Silver-plated cage bearings (plating thickness 5-10μm) are suitable for weakly corrosive environments (such as drive shafts of chemical equipment), with oxidation resistance 40% higher than that of ordinary brass cages. NEWBEE Transmission can also customize Dacromet coating (thickness 8-12μm) according to requirements, enabling the steel cage to achieve an 800-hour salt spray test life, suitable for outdoor heavy machinery.
5. Easy Assembly and Maintenance Design: Tapered Roller Bearing Cages adopt a "split + positioning boss" structure, allowing quick alignment of rollers and raceways without special tools during assembly. The steel cage bearing (stamped steel cage) from NEWBEE Transmission has an assembly efficiency 50% higher than that of integrated cages. Some models integrate lubricating grease storage grooves (volume 0.5-1.0cm³), extending the lubrication cycle to twice that of traditional cages and reducing equipment maintenance frequency. Metal cages can also detect internal defects through magnetic particle inspection, with much higher maintenance convenience than plastic cages.
Based on bearing cage design, bearing cage material, and application scenarios, Tapered Roller Bearing Cages can be divided into multiple types. NEWBEE Transmission can provide a full range of bearing cage types to meet the needs of different tapered roller bearings:
1. Bearing Cage Types Classified by Material - Steel cage bearing (steel cage): There are two types: stamped steel and forged steel. Stamped steel (SPCC material) has a density of 7.85g/cm³, a maximum rotational speed of 3000rpm, and a temperature resistance range of -30℃ to 250℃. It has high cost-effectiveness and is suitable for medium-low speed and heavy-load scenarios (such as automotive axles and mining equipment). Forged steel has a density of 7.87g/cm³, a maximum rotational speed of 2500rpm, and a temperature resistance range of -40℃ to 300℃. It has extremely strong impact resistance and load-carrying capacity, suitable for extreme heavy-load scenarios (such as heavy rolling mills and drive shafts of construction machinery). The surface of the steel cage from NEWBEE Transmission can be customized with carburizing and galvanizing treatments to enhance wear resistance and rust resistance. - Brass cage bearing (brass cage): Made of H62/H65 brass, it has a density of 8.4g/cm³, a maximum rotational speed of 4000rpm, and a temperature resistance range of -50℃ to 200℃. It has excellent high-speed stability and thermal conductivity, suitable for high-speed and high-precision scenarios (such as precision machine tool spindles and automotive hub bearings). The brass cage from NEWBEE Transmission is processed by precision turning, with a pocket surface roughness of Ra ≤0.4μm, reducing friction loss of rollers and compatible with full-specification tapered rollers with a taper of 1:12-1:30. - Silver-plated cage bearing (silver-plated cage): Uses brass or steel cages as the base material, with a silver-plated surface (plating thickness 5-10μm). It has a temperature resistance range of -50℃ to 220℃, and its oxidation resistance and weak corrosion resistance are 40% higher than those of ordinary cages. It is suitable for humid, dusty, or slightly corrosive scenarios (such as bearings of chemical pumps and outdoor motors). The silver-plated cage from NEWBEE Transmission passes a 500-hour salt spray test without plating peeling, ensuring a plating adhesion of ≥4.5N/mm².
2. Bearing Cage Types Classified by Structural Design - Stamped cage: Mostly made of steel, formed by high-precision mold stamping. It has a simple structure, high production efficiency, and low cost, suitable for standardized tapered roller bearings (such as Series 30200 and Series 32200). The stamped cage from NEWBEE Transmission uses imported German molds (tolerance ≤0.02mm) to ensure the matching of pocket taper and rollers, avoiding assembly jamming. - Turned cage: Mainly made of brass or steel, processed by precision lathes. It has high pocket precision (taper error ≤0.05°) and uniform wall thickness, suitable for high-speed and high-precision tapered roller bearings (such as Series 30300 and Series 32300). The turned cage from NEWBEE Transmission can be customized with a guide rib structure to enhance axial load transmission capacity, adapting to oblique load scenarios. - Forged cage: Made of forged steel, formed by forging + precision processing. It has high overall strength and strong deformation resistance, suitable for extreme heavy-load scenarios (such as drive shafts of heavy machinery and bearings of mining equipment). The forged cage from NEWBEE Transmission adopts a split design, which is easy to replace during maintenance, reducing the cost of overall bearing replacement.
The bearing cage types and bearing cage design of Tapered Roller Bearing Cages need to be accurately matched according to the application scenarios of tapered roller bearings. Various cages from NEWBEE Transmission have been widely used in multiple fields:
Automotive Field: Steel cage bearings (stamped steel cages) are mostly used for the front and rear axle bearings of automobiles. The stamped steel cages from NEWBEE Transmission are compatible with tapered rollers with a taper of 1:12, and can withstand 150kN axial load and 200kN radial load. They can still maintain stability during automotive braking and steering, with a wear rate as low as 0.005mm/1000h, extending the axle life to 300,000 kilometers. Brass cage bearings are used for high-end automotive hub bearings, with excellent high-speed stability and a vibration value of ≤0.08mm TIR under 4000rpm, improving driving comfort.
Heavy Machinery Field: The slewing bearings of excavators and cranes are equipped with steel cage bearings (forged steel cages). The forged steel cages from NEWBEE Transmission can withstand radial loads above 300kN, have strong impact resistance, and remain undeformed under instantaneous overload (1.8 times the rated load). The gearbox bearings of loaders are equipped with brass cage bearings; the thermal conductivity of brass can timely dissipate frictional heat, avoiding bearing failure caused by gearbox overheating.
Mining Equipment Field: The bearings of mining crushers and conveyors are equipped with steel cage bearings (carburized steel cages), which can withstand 250℃ high temperatures and adapt to impact loads (250kN) during ore crushing. The carburizing treatment by NEWBEE Transmission increases the surface hardness of the cage to HRC 58-60, improving wear resistance by 50% and avoiding the problem that ordinary cages wear out within 3-6 months. The drum bearings of mining winches are equipped with Silver-plated cage bearings; the silver-plated layer resists the humid underground environment, extending the bearing life to more than 2 years.
Precision Machine Tool Field: The spindle bearings of CNC lathes and milling machines are equipped with brass cage bearings (turned brass cages). The pocket taper error of the brass cages from NEWBEE Transmission is ≤0.03°; when used with P4-grade tapered roller bearings, they can achieve a radial runout of ≤0.003mm, meeting the requirements of precision machining (tolerance ±0.001mm). The grinding wheel spindle bearings of grinders are equipped with Silver-plated cage bearings; their low vibration characteristic (≤0.05mm TIR) ensures the rotation accuracy of the grinding wheel, improving the grinding surface finish (Ra ≤0.02μm).
The price of Tapered Roller Bearing Cages is affected by bearing cage material, bearing cage design, specifications, and customization requirements. NEWBEE Transmission can provide a transparent quotation plan to help users accurately control costs:
1. Differences in Bearing Cage Material: There are significant price gaps between different materials. Steel cage bearings (stamped steel) have the lowest price, ranging from 1 to 5 US dollars per unit (suitable for small bearings of Series 30200 and Series 32200). Brass cage bearings are 60%-90% more expensive than stamped steel (2.5-12 US dollars per unit, suitable for medium and large bearings of Series 30300 and Series 32300). Due to the plating process, Silver-plated cage bearings are 120%-150% more expensive than ordinary brass cages (6-25 US dollars per unit). Cages made of special materials (such as PEEK composite) have a higher price, ranging from 8 to 30 US dollars per unit, suitable for high-end precision scenarios.
2.Complexity of Bearing Cage Design: Standardized stamped cages (such as those suitable for Bearing 30205) have a simple structure and low unit price for mass production. Turned cages (such as those with a guide rib structure) require high processing precision (taper error ≤0.05mm), so their prices are 40%-60% higher than those of stamped cages. Forged cages, due to complex processes (forging + heat treatment), are 80%-100% more expensive than stamped cages (for example, the price of forged steel cages customized by NEWBEE Transmission for mining equipment is 90% higher than that of stamped cages of the same size).
3. Specification and Size: Micro-cages (suitable for bearings of Series 30200 with inner diameter <30mm, such as Bearing 30204) require high precision for stamping/turning, so their unit weight price is 70%-90% higher than that of conventional cages (suitable for inner diameter 30-80mm, such as Bearing 30306). Large cages (suitable for bearings of Series 32300 with inner diameter >100mm, such as Bearing 32320) require large-scale processing equipment (such as CNC vertical lathes), so their prices increase stepwise with the inner diameter. For every 50mm increase in inner diameter, the price rises by 30%-45% (for example, the price of brass cages suitable for inner diameter 150mm is 40% higher than that suitable for inner diameter 100mm).
4. Customization Requirements: Customized surface treatments (such as carburizing for steel cage bearings and polishing for brass cage bearings) increase the price by 15%-25%. Special bearing cage designs (such as integrated lubricating grease storage grooves and special-shaped guide ribs) increase the price by 35%-55% due to the need to redesign molds and processes. Small-batch customization (<300 units) is 25%-35% more expensive than bulk orders (>2000 units) due to high production debugging costs. For example, the price of steel cages with oil storage grooves customized for an automobile manufacturer is 30% higher than that of standard models.
1. Matching Working Conditions with Bearing Cage Material: Select materials based on load type, rotational speed, and environment — choose steel cage bearings (forged steel) for heavy loads (>200kN) and medium-low speeds (<3000rpm); select brass cage bearings for high speeds (3000-4000rpm) and high precision; choose Silver-plated cage bearings for humid/weakly corrosive environments. NEWBEE Transmission can recommend the optimal bearing cage material based on working condition parameters (such as 150kN axial load and 2500rpm rotational speed), avoiding insufficient strength of brass cage bearings under extreme heavy loads.
2. Adaptation of Bearing Cage Design to Bearing Model: Different models of tapered roller bearings need to be matched with corresponding designs — Series 30200 (light load) is suitable for stamped cages; Series 30300 (medium load) is suitable for turned cages; Series 32300 (heavy load) is suitable for forged cages. Confirm that the pocket taper and contact angle of the cage match the rollers (for example, for a cage suitable for tapered rollers with a taper of 1:12, the pocket taper should be 1:12±0.05). NEWBEE Transmission provides a full range of bearing cage types and can accurately match cages according to bearing models (such as 30208, 30310, and 32315).
3. Precision and Tolerance Requirements: High-precision bearings (P4 grade and P2 grade) require cages with a pocket taper error of ≤0.03° and a surface roughness of Ra ≤0.4μm, which can be met by the brass cage bearings and Silver-plated cage bearings from NEWBEE Transmission. For ordinary bearings (P0 grade and P6 grade), stamped steel cages with a taper error of ≤0.05° are sufficient. When purchasing, you can request a three-coordinate measurement report (including taper and contact angle data) to ensure matching with the bearing precision and avoid affecting overall performance due to insufficient cage precision.
4. Supplier Qualifications and Quality Assurance: Choose suppliers like NEWBEE Transmission that have a complete production chain (stamping/turning/forging equipment + heat treatment production line). They can provide bearing cage material reports (such as brass composition analysis and steel mechanical properties) and service life test data (1000-hour heavy-load operation test); avoid purchasing products from unqualified small factories (such as cages with excessive taper deviation, which easily cause roller uneven wear). All cages of NEWBEE undergo 100% dimensional inspection and load testing, with a quality traceability code attached to each batch.
5.Cost and Batch Rationality: Bulk purchases (>2000 units) can enjoy unit price discounts (for example, the bulk price of steel cage bearings is 18%-25% lower than the retail price). For non-extreme working conditions, prioritize stamped steel cages instead of expensive forged steel to reduce procurement costs by 40%-60%. Customized models require additional mold fees (approximately 500-2000 US dollars), so it is necessary to balance functional requirements and costs. NEWBEE can optimize the plan according to the purchase quantity, avoiding cost waste caused by over-pursuing high-end configurations.
NEWBEE Transmission is a professional manufacturer of Tapered Roller Bearing Cages. With over ten years of experience in the field of tapered roller bearing cages, it provides a full range of bearing cage types, including steel cage bearings, brass cage bearings, and Silver-plated cage bearings, compatible with the full specification range of tapered roller bearings with inner diameters from 20mm to 800mm (Series 30200, 30300, 32300, etc.). It can customize bearing cage designs (such as split structures, integrated lubrication grooves, and special surface treatments) according to customer needs. Relying on advanced manufacturing equipment and quality control, the production process of NEWBEE has achieved a high level of precision: stamped cages are processed by imported German Schuler stamping machines (tolerance control ≤0.02mm); brass cages are processed by Japanese OKUMA lathes (pocket taper error ≤0.03°); the silver-plating process of Silver-plated cage bearings adopts vacuum electroplating technology (plating uniformity ≤±1μm); combined with the ISO 9001 quality management system, each batch of cages undergoes "full-dimensional inspection", "taper testing", and "load testing" to ensure 100% compliance. NEWBEE has recently made a breakthrough in "heavy-load cage technology": the developed forged steel cage has a 30% higher load-carrying capacity, adapting to extreme load scenarios above 500kN; the pocket processing precision of brass cage bearings reaches ±0.01mm, adapting to the needs of P2-grade bearings. Currently, its products have been supporting global automobile manufacturers and heavy machinery enterprises. Steel cage bearings account for more than 35% of the automotive axle market, and brass cage bearings have become the preferred accessory for high-end machine tool spindles. For detailed parameters or quotations, you can contact the technical team of NEWBEE directly.
1. Standard Installation Operation: Use a taper positioning tool during installation to ensure the coaxiality deviation between the cage, rollers, and inner/outer rings is ≤0.05mm. Avoid hitting the cage to prevent pocket taper deformation (especially for brass cage bearings, as brass is prone to dents due to impact). For split bearing assembly, follow the order of "rollers - cage - inner ring" to ensure the rollers are fully clamped into the pockets. NEWBEE Transmission provides an installation guide to avoid installation deviation issues common in Silver-plated cage bearings.
2. Lubrication and Cleaning Management: Steel cage bearings and brass cage bearings are compatible with extreme pressure lithium-based grease (filling amount 1/2-2/3), and uniform distribution is achieved using the cage’s guide ribs. Silver-plated cage bearings in corrosive environments require chemical-resistant lubricating grease (such as perfluoropolyether grease). Clean the cage surface before installation to prevent impurities from blocking the pockets and causing roller jamming (especially in mining equipment scenarios, where dust and ore debris need to be removed).
3. Regular Inspection and Maintenance: Inspect the cage status every 500-1000 operating hours — use an endoscope to check for pocket wear (>0.05mm requires replacement) and plating peeling (Silver-plated cage bearings); monitor the bearing temperature (normal ≤80℃) and vibration value (normal ≤0.15mm TIR). If abnormalities occur (such as a sudden temperature rise >15℃), stop the machine immediately for inspection to avoid bearing scrapping caused by cage failure. When the cage reaches 70% of its recommended service life (such as 2 years for steel cages), preventive replacement is recommended. NEWBEE can provide old part testing to analyze the cause of failure.
For the latest prices, bearing cage design plans, or technical materials of Tapered Roller Bearing Cages (including steel cage bearings, brass cage bearings, and Silver-plated cage bearings), please contact NEWBEE Transmission:
Email: paul@newbeetrans.com
Official Website: www.newbeetrans.com
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sales@newbeetrans.com
+8615090185276