Type C Sealed Deep Groove Thin Section Bearings

Thin-Section Sealed Deep Groove Ball Bearings

C-Type Sealed Radial Contact Thin-Section Bearings for Compact, Low-Torque Precision Systems

C-Type Sealed Radial Contact Thin-Section Bearings are engineered with a precision deep groove ball structure to deliver smooth rotational performance, reduced operating torque, and reliable dimensional stability in compact assemblies. Manufacturers and equipment designers widely select these thin-section bearings for applications where installation space, system weight, and rotational accuracy directly affect overall equipment performance.

Unlike conventional bearings that require larger cross-sections to maintain load capacity, C-Type thin-section bearings maintain a constant cross-sectional profile while reducing overall bearing size and weight. This design allows engineers to optimize equipment layouts without sacrificing operational reliability or rotational efficiency. The compact geometry also helps reduce inertia in moving assemblies, which improves responsiveness in high-precision mechanical systems.

These bearings are commonly used in advanced equipment such as radar platforms, electro-optical systems, armaments, aerospace assemblies, medical instruments, robotic devices, and other precision machinery that demand lightweight construction and consistent low-friction operation. Their stable running characteristics make them particularly suitable for systems that require accurate positioning, smooth motion control, and long-term operational consistency.

Optimized Deep Groove Ball Structure for Smooth Rotation

The deep groove ball raceway design enables the bearing to support radial loads efficiently while also accommodating moderate axial loads from both directions. Precision-machined raceways minimize vibration and rotational resistance during operation, helping connected equipment maintain stable motion even under demanding working conditions.

The optimized internal geometry also contributes to:

Lower startup and running torque

Reduced frictional heat generation

Improved rotational smoothness

Lower energy consumption in compact drive systems

Enhanced operational stability at varying speeds

For equipment manufacturers developing lightweight or portable systems, these performance advantages help improve both energy efficiency and mechanical responsiveness.

Advanced Sealing Design for Extended Bearing Life

Standard C-Type sealed thin-section bearings are supplied with double seals to improve protection against environmental contamination. The sealing system effectively isolates internal rolling elements from dust, moisture, fine particles, and industrial contaminants that could otherwise reduce bearing life or affect rotational accuracy.

Single-side sealed configurations are also available for applications requiring customized lubrication flow, reduced sealing resistance, or specific environmental exposure conditions.

The seals are manufactured from high-quality nitrile rubber (NBR), which offers excellent resistance to:

Industrial oils and lubricants

Moisture and humidity

Dust and airborne contaminants

Moderate temperature fluctuations

General industrial wear conditions

This sealing structure helps maintain lubricant integrity over extended operating periods, reducing maintenance frequency and improving long-term equipment reliability.

Lightweight Design for Modern Precision Equipment

Modern industrial and defense-related systems increasingly require compact mechanical components that reduce overall system weight without compromising structural integrity. C-Type thin-section bearings provide an ideal solution for these requirements through their lightweight construction and reduced cross-sectional dimensions.

By lowering bearing mass and minimizing occupied installation space, these bearings help engineers:

Reduce overall equipment weight

Improve mechanical efficiency

Increase available internal design space

Simplify compact assembly layouts

Enhance dynamic response in rotating systems

These advantages are especially valuable in aerospace systems, portable equipment, robotics, surveillance devices, and high-precision automation platforms.

Reliable Performance in Demanding Applications

C-Type Sealed Radial Contact Thin-Section Bearings are manufactured to maintain dependable performance in both industrial and outdoor operating environments. Precision production processes ensure consistent dimensional accuracy, smooth raceway finishing, and reliable rotational behavior throughout extended service cycles.

Their combination of compact structure, low torque characteristics, contamination resistance, and lightweight efficiency makes them a preferred choice for demanding applications where conventional bearing solutions may not meet space or performance requirements.

Typical Applications

These thin-section sealed bearings are widely used in:

Radar and surveillance systems

Precision optical equipment

Armament and defense systems

Medical imaging devices

Robotics and automation equipment

Aerospace assemblies

Semiconductor manufacturing equipment

High-precision rotary platforms

Compact motion control systems

Customization and Engineering Support

To meet the varying requirements of modern equipment manufacturers, customized sealing arrangements, lubrication options, dimensional tolerances, and material configurations can be provided according to specific operating conditions and application requirements.

Engineering teams can also support customers with bearing selection, load analysis, and integration recommendations to ensure optimal performance within complex mechanical systems.

NJHA Series Sealed Radial Contact Thin-Section Bearings (ID:25.4-38.1mm)

◆NJHA SERIES
Part No	Dimension（inch/mm)			Basic Cap（N)		Weight	Interchange
	d	D	H	Cor	Cr	Kg	SILVER	KAYDON	SSB
NJHA10CP0	1.000	1.375	0.250	1290	670	0.016	JSHA10CL0	JHA10CL0	RJHA10CL0
	25.400	34.925	6.350
NJHA15CP0	1.500	1.875	0.250	1780	800	0.024	JSHA15CL0	JHA15CL0	RJHA15CL0
	38.100	47.625	6.350

NJA Series Sealed Radial Contact Thin-Section Bearings (ID:50.8-165.1mm)

◆NJA SERIES
Part No	Dimension（inch/mm)			Basic Cap（N)		Weight	Interchange
	d	D	H	Cor	Cr	Kg	SILVER	KAYDON	SSB
NJA020CP0	2.000	2.500	0.250	3020	1420	0.045	JSA020CP0	JA020CP0	RJA020CP0
	50.800	63.500	6.350
NJA025CP0	2.500	3.000	0.250	3690	1600	0.054	JSA025CP0	JA025CP0	RJA025CP0
	63.500	76.200	6.350
NJA030CP0	3.000	3.500	0.250	4400	1820	0.064	JSA030CP0	JA030CP0	RJA030CP0
	76.200	88.900	6.350
NJA035CP0	3.500	4.000	0.250	5070	2000	0.077	JSA035CP0	JA035CP0	RJA035CP0
	88.900	101.600	6.350
NJA040CP0	4.000	4.500	0.250	5730	2130	0.086	JSA040CP0	JA040CP0	RJA040CP0
	101.600	114.300	6.350
NJA042CP0	4.250	4.750	0.250	6090	2220	0.091	JSA042CP0	JA042CP0	RJA042CP0
	107.950	120.650	6.350
NJA045CP0	4.500	5.000	0.250	6400	2310	0.095	JSA045CP0	JA045CP0	RJA045CP0
	114.300	127.000	6.350
NJA047CP0	4.750	5.250	0.250	6760	2400	0.100	JSA047CP0	JA047CP0	RJA047CP0
	120.650	133.350	6.350
NJA050CP0	5.000	5.500	0.250	7070	2490	0.104	JSA050CP0	JA050CP0	RJA050CP0
	127.000	139.700	6.350
NJA055CP0	5.500	6.000	0.250	7780	2620	0.113	JSA055CP0	JA055CP0	RJA055CP0
	139.700	152.400	6.350
NJA060CP0	6.000	6.500	0.250	8450	2800	0.127	JSA060CP0	JA060CP0	RJA060CP0
	152.400	165.100	6.350
NJA065CP0	6.500	7.000	0.250	9110	2930	0.136	JSA065CP0	JA065CP0	RJA065CP0
	165.100	177.800	6.350

NJB Series Sealed Radial Contact Thin-Section Bearings (ID:50.8-165.1mm)

NJU Series Sealed Radial Contact Thin-Section Bearings (ID:101.6-304.8mm)

NJG Series Sealed Radial Contact Thin-Section Bearings (ID:304.8-508mm)