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 Cylindrical Roller Bearing Cage, also known as a cylindrical roller bearing retainer, is a core functional component of cylindrical roller bearings. Its primary role is to fix the cylindrical rollers inside the bearing at uniform circumferential intervals, guide the rollers to roll stably within the raceways of the inner and outer rings, prevent wear caused by collision and friction between rollers, and optimize the uniform transmission of radial loads. It is a key guarantee for cylindrical roller bearings to adapt to heavy-load and high-speed working conditions. The rationality of its bearing cage design and the adaptability of its bearing cage material directly determine the maximum rotational speed, radial load-carrying capacity, and service life of the cylindrical roller bearing.
As a professional manufacturer of bearings and accessories, NEWBEE Transmission’s Cylindrical Roller Bearing Cages, with the design of "reinforced rib structure + precision pocket machining", can increase the radial load-carrying capacity of cylindrical roller bearings by 20%-25% and reduce vibration by 40% under the same working conditions. They are widely used in scenarios with strict requirements on load and precision, such as machine tool spindles, heavy machinery, and wind power equipment, fully demonstrating in-depth mastery of the technology for core components of cylindrical roller bearings.
1. Superior High-Speed Adaptability: NEWBEE Transmission integrates a high-speed optimization concept into the bearing cage design of Cylindrical Roller Bearing Cages. For example, the maximum rotational speed of PEEK composite material cages (suitable for ultra-high-speed scenarios) can reach 8000 rpm, which is 35% higher than that of traditional steel cage bearings (3000 rpm). Moreover, they are less affected by centrifugal force and can still maintain stable operation under the working condition of 15000 rpm for machine tool spindles. The brass cage bearing (turned brass cage), with excellent high-speed stability, controls the runout to ≤0.05 mm TIR under 5000 rpm, which is far better than the 0.1 mm standard of ordinary steel cages, making it the preferred accessory for high-speed cylindrical roller bearings.
2. Enhanced Radial Load-Carrying Capacity: Through the design of reinforced rib structures, the radial load-bearing capacity of Cylindrical Roller Bearing Cages is increased by 20%-25%. The steel cage bearing (stamped steel cage) from NEWBEE Transmission adopts a double-guide flange structure, which can effectively disperse the radial force transmitted by the rollers and is suitable for heavy-load scenarios above 200 kN (such as drive shafts of heavy machinery). The forged steel cage, with a high density of 7.87 g/cm³ and a hardness of HV800, can withstand extreme radial loads, with a wear rate controlled at <0.01 mm/1000 h, significantly extending the overall service life of the bearing.
3. Excellent Axial Stability and Impact Resistance: The double-guide flange design of Cylindrical Roller Bearing Cages can prevent rollers from shifting under impact loads. The brass cage bearing from NEWBEE Transmission ensures uniform distribution of rollers through precise pocket tolerance of ±0.01 mm, and can maintain axial stability under instantaneous impact loads (1.5 times the rated load), avoiding bearing jamming caused by roller skewing. The Silver-plated cage bearing (silver-plated cage) adds oxidation resistance on the basis of axial stability, making it suitable for impact working conditions in humid or weakly corrosive environments (such as drive shafts of chemical equipment).
4. Precision Manufacturing and Low-Friction Characteristics: Relying on precision processing technology, NEWBEE Transmission strictly controls the surface finish of Cylindrical Roller Bearing Cages — the surface roughness of metal material (steel, brass) cages is Ra ≤0.4 μm, and that of polymer materials (PEEK, polyamide 46) is Ra ≤0.8 μm, which greatly reduces the sliding friction between rollers and pockets. At the same time, the gap between pockets and rollers is optimized (0.02-0.05 mm), reducing the friction coefficient to 0.0015, which is 20% lower than that of ordinary cages, making it suitable for energy-saving equipment requirements.
5. Environmental Resistance and Easy Maintenance Design: Different bearing cage materials have different environmental resistance capabilities — steel cage bearings can withstand temperatures up to 300℃ after nitriding treatment, suitable for high-temperature working conditions (such as metallurgical equipment); PEEK composite material cages can withstand temperatures ranging from -60℃ to 250℃ and are resistant to chemical corrosion, suitable for harsh environments; the split structure design (patented by NEWBEE Transmission) makes the cage easy to disassemble and clean. There is no need to disassemble the entire bearing during maintenance, which shortens the inspection and repair time of metal cages by 60%, and polymer cages even support quick replacement within 15 minutes, reducing equipment downtime costs.
Based on bearing cage design, bearing cage material, and application scenarios, Cylindrical 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 cylindrical roller bearings:
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 7.85 g/cm³, a maximum rotational speed of 3000 rpm, and a temperature resistance range of -30℃ to 150℃. It has high cost-effectiveness and is suitable for medium-low speed and heavy-load scenarios (such as drive shafts of heavy machinery and bearings of conveying equipment). Forged steel has a density of 7.87 g/cm³, a maximum rotational speed of 2500 rpm, and a temperature resistance range of -40℃ to 300℃. It has extremely strong impact resistance and load-carrying capacity, suitable for extreme load scenarios such as wind power spindles and metallurgical equipment. The surface of the steel cage from NEWBEE Transmission can be customized with nitriding treatment (hardness HV800) or galvanizing for rust prevention, extending its service life in harsh environments.
Brass cage bearing (brass cage): Made of H62/H65 brass, it has a density of 8.4 g/cm³, a maximum rotational speed of 5000 rpm, and a temperature resistance range of -50℃ to 200℃. It has excellent high-speed stability and thermal conductivity, suitable for high-precision and high-speed scenarios such as machine tool spindles and high-speed gearboxes. The brass cage from NEWBEE Transmission is processed by precision turning, with a pocket tolerance of ±0.01 mm and a surface roughness of Ra ≤0.4 μm, reducing friction loss of rollers.
Silver-plated cage bearing (silver-plated cage): Uses brass or steel cages as the base material, with a silver-plated surface (plating thickness 5-10 μm). 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 ≥4.5 N/mm².
PEEK composite material cage: With a density of 1.32 g/cm³, a maximum rotational speed of 8000 rpm, and a temperature resistance range of -60℃ to 250℃, it is currently the core choice for ultra-high-speed scenarios (such as high-speed machine tool spindles and auxiliary bearings of aero-engines). The PEEK cage from NEWBEE Transmission is reinforced with glass fiber, increasing rigidity by 30%, and at the same time has the advantage of light weight (70% lighter than brass cages), reducing rotational inertia.
Polyamide 46 (PA46) cage: With a density of 1.18 g/cm³, a maximum rotational speed of 6000 rpm, and a temperature resistance range of -40℃ to 180℃, it has excellent vibration damping characteristics (vibration value ≤2.5 mm/s). It is suitable for noise-sensitive scenarios such as precision testing instruments and medical equipment bearings. NEWBEE Transmission can add graphite filling to PA46 to further reduce the friction coefficient.
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 cylindrical roller bearings (such as NU series and NJ series). The stamped cage from NEWBEE Transmission uses imported German molds (tolerance ≤0.02 mm) to ensure the matching degree between pockets and rollers, avoiding assembly jamming.
Turned cage: Mainly made of brass or steel, processed by precision lathes. It has high pocket precision (±0.01 mm) and uniform wall thickness, suitable for high-speed and high-precision cylindrical roller bearings (such as NUP series and NH series). The turned cage from NEWBEE Transmission can be customized with a double-guide flange structure to enhance axial stability and adapt to impact 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 wind power spindle bearings and heavy rolling mill bearings). 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 Cylindrical Roller Bearing Cages need to be accurately matched according to the application scenarios of cylindrical roller bearings. Various cages from NEWBEE Transmission have been widely used in multiple fields:
Machine Tool Spindle Field: For high-speed machine tool spindles (rotational speed >8000 rpm), PEEK composite material cages are preferred. The PEEK cages from NEWBEE Transmission can adapt to rotational speeds above 15000 rpm, with vibration controlled at ≤0.05 mm TIR, ensuring spindle machining precision (radial runout ≤0.003 mm). For medium-speed spindles (3000-5000 rpm), brass cage bearings are selected; the thermal conductivity of brass can timely dissipate frictional heat, avoiding precision drift caused by spindle overheating.
Heavy Machinery Field: The drive shaft bearings of excavators and cranes are equipped with steel cage bearings (forged steel material). The forged steel cages from NEWBEE Transmission can withstand radial loads above 200 kN, have strong impact resistance, and remain undeformed under instantaneous overload (1.8 times the rated load). For high-temperature roller table bearings of metallurgical equipment, nitrided steel cages are selected, which can withstand 300℃ high temperatures and adapt to billet rolling scenarios.
Wind Power Equipment Field: The spindle bearings of wind turbines (above 2 MW) adopt forged steel cages. The forged steel cages from NEWBEE Transmission pass 100% load testing (1.2 times the rated load for 10 minutes), resist gust impacts, and their split structure facilitates the maintenance of offshore wind power equipment (inspection and repair time is shortened to less than 1 hour). The yaw bearings are equipped with Silver-plated cage bearings; the silver-plated layer resists the high-salt spray environment at sea, extending the bearing service life to more than 15 years.
Precision Instrument Field: The auxiliary bearings of coordinate measuring machines and laser cutting machines are equipped with polyamide 46 cages. The PA46 cages from NEWBEE Transmission have excellent vibration damping performance, with operating noise ≤45 dB, and their lightweight design (weight <5 g) reduces the inertial error of instruments. The rotating bearings of medical CT machines are equipped with PEEK cages, which are resistant to corrosion in disinfection environments and meet the hygiene standards of medical equipment.
Chemical Equipment Field: The drive bearings of chemical pumps and reaction kettles are equipped with Silver-plated cage bearings; the silver-plated layer resists corrosion from acid and alkali vapors. The Silver-plated cage bearings from NEWBEE Transmission, combined with IP65 seals, can operate stably in chlorine-containing and sulfur-containing environments, avoiding the problem that ordinary cages fail within 3-6 months.
The price of Cylindrical 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 0.8 to 5 US dollars per unit (suitable for small bearings of NU200 series and NJ300 series). Brass cage bearings are 60%-90% more expensive than stamped steel (2-12 US dollars per unit, suitable for medium and large bearings of NUP220 series and NH230 series). Due to the plating process, Silver-plated cage bearings are 120%-150% more expensive than ordinary brass cages (5-25 US dollars per unit). PEEK composite material cages have the highest price, ranging from 8 to 35 US dollars per unit (suitable for high-speed and high-end scenarios). The price of polyamide 46 cages is between that of brass and PEEK (3-18 US dollars per unit).
2. Complexity of Bearing Cage Design: Standardized stamped cages (such as those suitable for NU205 bearings) have a simple structure and low unit price for mass production. Turned cages (such as those with a double-guide flange structure) require high processing precision (tolerance ≤0.01 mm), so their prices are 40%-60% higher than those of stamped cages. Split forged cages are 35%-50% more expensive than integral forged cages due to complex forging processes and structural design (for example, the price of split forged steel cages customized by NEWBEE Transmission for wind power spindles is 40% higher than that of integral ones).
3. Specification and Size: Micro-cages (suitable for cylindrical roller bearings with inner diameter <20 mm, such as NU201) have a unit weight price 70%-90% higher than that of conventional cages (suitable for inner diameter 30-80 mm, such as NJ306) due to the high difficulty of precision stamping/injection molding. Large cages (suitable for inner diameter >150 mm, such as NH232) require large-scale processing equipment (such as CNC vertical lathes), so their prices increase stepwise with the inner diameter. For every 50 mm increase in inner diameter, the price rises by 30%-45% (for example, the price of brass cages suitable for inner diameter 200 mm is 35% higher than that suitable for inner diameter 150 mm).
4.Customization Requirements: Customized surface treatments (such as nitriding 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 flanges) 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 PEEK cages with oil storage grooves customized for a certain machine tool factory is 30% higher than that of standard models.
1. Matching Working Conditions with Bearing Cage Material: Select materials based on the rotational speed, load, temperature, and environment of the cylindrical roller bearing — choose PEEK composite materials for ultra-high speed (>6000 rpm); select brass cage bearings for medium-high speed (3000-6000 rpm); choose forged steel cages for heavy loads (>100 kN); select Silver-plated cage bearings for humid/weakly corrosive environments; and choose polyamide 46 for vibration damping needs. NEWBEE Transmission can recommend the optimal bearing cage material based on working condition parameters (such as rotational speed 4000 rpm and load 50 kN) to avoid cage failure caused by improper materials (for example, ordinary steel cages wear out within 100 hours when used in 8000 rpm working conditions).
2. Adaptation of Bearing Cage Design to Bearing Model: Different types of cylindrical roller bearings need to be matched with corresponding designs — NU series (inner ring without ribs) are suitable for cages with double-guide flanges; NJ series (inner ring with single rib) are suitable for cages with single-side guide flanges; high-speed NUP series (inner ring with double ribs + flat washer) are suitable for lightweight turned cages. When purchasing, confirm that the number and length of the cage’s pockets match the rollers (for example, for a cage suitable for φ10×20 mm rollers, the pocket size should be 10.2×20.3 mm). NEWBEE Transmission provides a full range of bearing cage types and can accurately match cages according to bearing models (such as NU2210 and NJ315).
3. Precision and Tolerance Requirements: High-precision bearings (P4 grade and P2 grade) require cages with pocket tolerance ≤±0.01 mm and wall thickness deviation ≤0.02 mm, which can be met by the brass cage bearings and PEEK cages from NEWBEE Transmission. For ordinary bearings (P0 grade and P6 grade), stamped steel cages with a tolerance of ±0.03 mm are sufficient. When purchasing, you can request a precision inspection report (such as three-coordinate measurement data) to ensure that it matches the bearing precision.
4. Supplier Qualifications and Quality Assurance: Choose suppliers with a complete production chain like NEWBEE Transmission. They can provide bearing cage material reports (such as brass composition analysis and PEEK mechanical properties), service life test data (such as 1000-hour high-speed operation test); avoid purchasing unqualified products (such as thin-walled stamped steel cages, which are easy to break and cause bearing jamming). 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); there is no need to choose high-end materials unless necessary (for example, PEEK is not required for ordinary medium-speed working conditions, and choosing brass cage bearings can reduce costs by 40%). NEWBEE can optimize the plan according to the purchase quantity, balancing performance and cost.
NEWBEE Transmission is a professional manufacturer of Cylindrical Roller Bearing Cages. Having been deeply engaged in the field of core bearing components for more than ten years, it can provide a full range of bearing cage types, including steel cage bearings, brass cage bearings, Silver-plated cage bearings, PEEK composite materials, and polyamide 46 cages. These cages are suitable for the full specification range of cylindrical roller bearings with inner diameters from 10 mm to 500 mm (NU, NJ, NUP, NH and other series) and can be customized with bearing cage designs (such as split structure, integrated lubrication groove, and special surface treatment) according to customer needs. Relying on advanced manufacturing equipment and quality control, the production process of NEWBEE’s Cylindrical Roller Bearing Cages has achieved a high level of precision: stamped cages are processed by imported German Schuler stamping machines (tolerance control ≤0.02 mm); brass cages are processed by Japanese OKUMA lathes (surface Ra ≤0.4 μm); PEEK cages are processed by imported injection molding machines + 3D inspection; combined with ISO 9001 and ISO 14001 systems, each batch of cages undergoes "full-dimensional inspection", "load testing", and "environmental aging testing" to ensure 100% compliance. NEWBEE has recently made a breakthrough in "high-speed cage technology": the developed PEEK composite cage has a maximum rotational speed of 10000 rpm, which is 25% higher than similar products in the industry; the pocket processing precision of brass cage bearings reaches ±0.008 mm, adapting to the needs of P2 grade bearings. At present, the products have been supporting global bearing enterprises, with steel cage bearings accounting for more than 30% of the heavy machinery field, and PEEK cages becoming the first choice for high-end machine tool spindles. For detailed parameters or quotations, you can contact the technical team of NEWBEE directly.
1. Standard Installation Operation: During installation, ensure that the coaxiality deviation between the cage, rollers, and inner/outer rings is ≤0.05 mm, and avoid knocking (for example, a special press-fitting tool is required when installing brass cage bearings); split cages should be assembled in the order of "roller - cage - inner ring" to ensure that the rollers are fully clamped into the pockets (for example, it is necessary to confirm that each roller of the wind power spindle cage is not offset). NEWBEE provides an installation manual to avoid cage deformation caused by improper installation.
2.Scientific Lubrication Management: Steel cage bearings and brass cage bearings are compatible with extreme pressure lithium-based grease (filling amount 1/2-2/3); PEEK and polyamide 46 cages are compatible with polyurea grease to avoid high-temperature aging of the grease; 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 entering the pockets.
3. Regular Inspection and Replacement: Inspect metal cages (steel, brass) every 5000 operating hours, and inspect polymer cages (PEEK, PA46) every 8000 hours; focus on pocket wear (replace when >0.05 mm) and plating peeling (Silver-plated cage bearings); when the cage reaches 70% of its recommended service life (such as 5 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 Cylindrical 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