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High-Precision Cylindrical Roller Bearings--CAGRI Bearings
Product Overview
CAGRI Bearings is a premier supplier of Cylindrical Roller Bearing solutions. A Cylindrical Roller Bearing is a radial rolling bearing that uses cylindrical rollers as its rolling elements, with line contact or modified line contact between the rollers and raceways. Specifically, this design delivers exceptional high radial load capacity, making it ideal for demanding industrial applications.
In terms of classification, Cylindrical Roller Bearings are primarily categorized by the number of roller rows into three core types: Single‑row, Double‑row, and Four‑row.
Single‑row models include: Type N (outer ring without ribs, inner ring with double ribs), Type NU (outer ring with double ribs, inner ring without ribs), Type NJ (outer ring with double ribs, inner ring with single rib), and Type NUP (outer ring with double ribs, inner ring with single rib plus a separable flat rib).
Double‑row models are mainly Type NN (outer ring without ribs, inner ring with double ribs plus a middle rib) and Type NNU (outer ring with double ribs plus a middle rib, inner ring without ribs).
Four‑row models include Type FC (two outer rings and one inner ring) and Type FCD (a combination of two NN types).
Furthermore, precision grades are divided into five levels—from low to high: P0, P6, P5, P4, and P2. Notably, P4 and P2 grades are suitable for ultra‑precision scenarios such as machine tool spindles.
With regard to materials, cage options include stamped steel, machined brass, and molded polyamide. Additionally, select high‑end models utilize glass‑fiber‑reinforced PEEK cages to meet the demands of high‑speed operation.
What is Cylindrical Roller Bearings?
The Cylindrical Roller Bearing is a core mechanical component engineered for heavy radial loads and impact conditions. Specifically, it features a low friction coefficient, a limiting speed close to that of deep groove ball bearings, and separable inner and outer rings—enabling straightforward installation and disassembly.
Moreover, certain designs accommodate axial displacement. Models such as N, NU, and NN adapt to relative positional changes between shaft and housing caused by thermal expansion or installation errors; consequently, they are often deployed as free‑end bearings. In contrast, NUP and NH types withstand bidirectional axial loads and are therefore suited for fixed‑end positioning.
Across industries, these cylindrical roller bearings are widely compatible with a diverse range of equipment—from general‑purpose motors and pumps to high‑end machine tool spindles, wind turbines, and heavy machinery such as metallurgical rolling mills—satisfying the dual demands of high load capacity and operational precision.
CAGRI Cylindrical Roller Bearing Advantages
CAGRI Cylindrical Roller Bearings have built four core competitive advantages through innovative design and rigorous craftsmanship.
Super‑Enhanced Load Capacity
A proprietary roller and raceway profile design optimizes the line‑contact structure, increasing radial load capacity by more than 20% compared to ordinary bearings. Consequently, these bearings are ideally suited for extreme heavy‑load scenarios.
High Precision and Rigidity
The entire product series covers precision grades from P5 to P2. Through roller guidance technology and a precision grinding process, spindle runout error is controlled at the micron level. Additionally, the rigidity of double‑row models is 40% higher than that of single‑row designs.
Long‑Term Operational Stability
Select models utilize carbon‑fiber‑reinforced PEEK cages to reduce roller drag and frictional heat generation. Combined with outer‑ring lubrication grooves and three lubrication holes (suffix W33), grease life is extended by 50%, and the operating temperature range is widened to ‑40°C to 120°C.
Full‑Scenario Adaptation and Fast Delivery
The lineup covers single‑row, double‑row, and four‑row categories, with both cylindrical bore and 1:12 tapered bore (suffix K) options available. Furthermore, regular models are stocked for immediate availability, and the delivery cycle for customized products has been shortened by 30%—satisfying both emergency maintenance and volume production requirements.
Application
Category | ||
Metallurgy & Mining Machinery | General Industrial Machinery | Aerospace Equipment |
Machine Tool Industry | Transportation & Heavy Machinery |
|
Energy Equipment | Automotive Industry | |
Subcategory | |
Rolling Equipment, Mining Equipment | Railway Equipment, Construction Machinery |
Spindle Systems, Feed Mechanisms | Transmission Systems, Chassis Components |
Wind Power Equipment, Power Generation Equipment | Engine Systems, Transmission Mechanisms |
Transmission Equipment, Fluid Machinery | |
| Applicable Products |
| Cold/hot rolling mills, blooming mills, crushers, ball mills, bar mills, mine hoists |
| CNC machine tool spindles, machining center spindles, grinder spindles, lathe spindles, milling machine feed shafts |
| Wind turbine spindles, steam turbines, generator rotors, hydraulic turbines, photovoltaic equipment transmission systems |
| Gearboxes, reducers, centrifugal pumps, air compressors, injection molding machines, extruders, blowers |
| Railway locomotive axles, crane pulleys, loaders, excavators, forklift drive axles, heavy-duty truck gearboxes |
| Automotive gearboxes, drive axles, differentials, motor bearing units |
| Aerospace engine spindles, aerospace transmission components, UAV power systems |
Single Row Caged Cylindrical Roller Bearings
Single row cylindrical roller bearings, caged, mainly of the NU, NJ, NUP and N designs.
Double Row Caged Cylindrical Roller Bearings
Double row cylindrical roller bearings, caged, mainly of the NNU and NN designs.
Single Row Full Complement Cylindrical Roller Bearings
Single row full complement cylindrical roller bearings, mainly of the NCF and NJG designs.
Double Row Full Complement Cylindrical Roller Bearings
Double row full complement cylindrical roller bearings, mainly of the NNF design.
Cylindrical roller bearings with a cage can accommodate heavy radial loads and operate at high speeds. In contrast, full complement cylindrical roller bearings are suitable for very heavy radial loads at moderate speeds. Furthermore, cylindrical roller bearings offer high carrying capacity and have been widely adopted in agricultural machinery, large and medium‑sized motors, rolling stock equipment, machine tool spindles, internal combustion engines, generators, gas turbines, gearboxes, rolling mill machines, vibrating screens, and lifting machinery.
In a single row design, the rollers are always guided between the integral “open” flanges on one of the rings. Specifically, these “open” flanges—combined with the specially designed and surface‑finished roller ends—provide improved lubrication, reduced friction and, consequently, lower operating temperature. Moreover, the ring with the integral flanges, together with the cylindrical roller and cage assembly, can be separated from the other ring. As a result, this design enables easy mounting and dismounting, particularly where load conditions require interference fits for both rings.
Overall, our single row cylindrical roller bearings accommodate heavy radial loads and high speeds. They are manufactured in several different designs, the main difference being the configuration of the flanges.
NU design | The outer ring of an NU-design bearing has two integral flanges while the inner ring has no flanges (a). Axial displacement of the shaft with respect to the housing can be accommodated in both directions. |
N design | The inner ring of an N-design bearing has two integral flanges while the outer ring has no flanges (b). Axial displacement of the shaft with respect to the housing can be accommodated in both directions. |
NJ design | The outer ring of an NJ-design bearing has two integral flanges and the inner ring has one integral flange (c). These bearings can locate the shaft axially in one direction. |
NUP design | The outer ring of an NUP-design bearing has two integral flanges and the inner ring has one integral flange and one non-integral flange in the form of a loose flange ring (d). These bearings can be used as locating bearings to locate the shaft axially in both directions. |
NU+HJ execution | An NU –type bearing combined with an HJ angle ring (e) can be used to locate the shaft axially in one direction. Recommends not to fit standard angle rings at both sides of an NU-type bearing as this can lead to axial compression of the rollers. |
NJ+HJ execution | An NJ-type bearing combined with an HJ angle ring (f) can be used to locate the shaft axially in both directions. |
RNU design | NU-design cylindrical roller bearing without an inner ring |
RN design | N-design bearings without an outer ring |
FAQ
CAGRI BEARINGS
Website：www.camcjsw-bearings.com
SINO-MACHINERY AGRO-DEVELOPMENT INVESTMENT CO., LTD. JIANGSU BRANCH
JIANGSU WALLONG-HSIN MACHINERY ENGINEERING CORPORATION LTD.
TEL：+86-510-8273 6527(Business)
+86-510-8270 1813(General)
FAX：+86-510-8272 5039/ 8271 0822
E-MAIL：guchenglong@camcjsw.com
camcjsw@camcjsw.com(General)
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