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INA

INA, a brand of the Schaeffler Group, is a German manufacturer of rolling bearings and linear motion products with a history dating back to 1946. The brand is recognized globally for its engineering precision and extensive product range, particularly in needle roller bearings, cylindrical roller bearings, and bearing accessories. INA's product families include drawn-cup needle roller bearings (e.g., SCE series), heavy-duty needle roller bearings (NKI series), combination bearings (NKIB series), cylindrical roller thrust bearings (81110 series), needle roller thrust bearings (TC series), and general-purpose flange-mount ball bearings (RCJ and PME series). These bearings are designed for applications requiring high load capacity, compact dimensions, and reliable performance under demanding conditions. INA bearings are manufactured to metric and inch standards, with materials such as alloy steel and cast iron housings, and are available in open or sealed configurations. Key specifications include bore diameters from 5/16 in to 75 mm, outside diameters up to 70 mm, and operating speeds up to 4,000 RPM for thrust bearings. The brand's products are used across industrial sectors including automotive, material handling, agricultural machinery, and general engineering. 3G Electric supplies a range of INA bearings, including cylindrical roller thrust bearings, needle roller bearings, combination bearings, flange-mount ball bearings, and thrust bearing washers. The inventory covers 185 SKUs, allowing procurement specialists and plant engineers to source specific INA models for maintenance, repair, and operations (MRO) or new equipment builds. 3G Electric supports the line by providing detailed specifications, cross-referencing part numbers, and facilitating global shipping from its Singapore headquarters.

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About INA

INA, a brand of the Schaeffler Group, is a German manufacturer of rolling bearings and linear motion products with a history dating back to 1946. The brand is recognized globally for its engineering precision and extensive product range, particularly in needle roller bearings, cylindrical roller bearings, and bearing accessories. INA's product families include drawn-cup needle roller bearings (e.g., SCE series), heavy-duty needle roller bearings (NKI series), combination bearings (NKIB series), cylindrical roller thrust bearings (81110 series), needle roller thrust bearings (TC series), and general-purpose flange-mount ball bearings (RCJ and PME series). These bearings are designed for applications requiring high load capacity, compact dimensions, and reliable performance under demanding conditions. INA bearings are manufactured to metric and inch standards, with materials such as alloy steel and cast iron housings, and are available in open or sealed configurations. Key specifications include bore diameters from 5/16 in to 75 mm, outside diameters up to 70 mm, and operating speeds up to 4,000 RPM for thrust bearings. The brand's products are used across industrial sectors including automotive, material handling, agricultural machinery, and general engineering. 3G Electric supplies a range of INA bearings, including cylindrical roller thrust bearings, needle roller bearings, combination bearings, flange-mount ball bearings, and thrust bearing washers. The inventory covers 185 SKUs, allowing procurement specialists and plant engineers to source specific INA models for maintenance, repair, and operations (MRO) or new equipment builds. 3G Electric supports the line by providing detailed specifications, cross-referencing part numbers, and facilitating global shipping from its Singapore headquarters.

Common Applications

  • Automotive transmissions — INA NKI25/20-TV-XL needle roller bearings for gearbox shafts
  • Material handling conveyors — INA RCJ75-XL flange-mount ball bearings for roller support
  • Agricultural machinery — INA SCE45 drawn-cup needle roller bearings for pivot points
  • Machine tool spindles — INA NKIB5904 combination bearings for combined radial/axial loads
  • Industrial pumps — INA 81110-TV cylindrical roller thrust bearings for axial thrust
  • General engineering — INA TC3244 needle roller thrust bearings for low-speed rotary tables

Frequently asked questions

Common questions about INA from 3G Electric.

What types of INA needle roller bearings are available from 3G Electric?

3G Electric stocks several INA needle roller bearing families, including drawn-cup types (SCE series) for inch-system applications, heavy-duty NKI series with metric dimensions, and combination bearings (NKIB series) that integrate needle rollers with angular contact ball bearings. These bearings are available in single-row, open configurations, with alloy steel construction. Bore diameters range from 1/4 in to 25 mm, and outside diameters up to 38 mm. The drawn-cup SCE45, for example, has a 1/4 in bore and 7/16 in OD, while the NKI25/20-TV-XL has a 25 mm bore and 38 mm OD.

What is the load capacity of the INA 81110 cylindrical roller thrust bearing?

The INA 81110-TV cylindrical roller thrust bearing (SKU 4ZZK9) has a 50 mm bore diameter, 70 mm outside diameter, and 14 mm overall width. While specific dynamic and static load ratings depend on the exact variant, cylindrical roller thrust bearings of this size class typically handle axial loads in the range of 30–50 kN dynamic and 60–100 kN static. For precise values, refer to the manufacturer's datasheet or contact 3G Electric for the specific part number.

Are INA flange-mount bearings from 3G Electric suitable for high-speed applications?

INA flange-mount ball bearings, such as the RCJ75-XL and PME30-XL-N, are general-purpose units designed for moderate-speed applications. They feature cast iron housings, eccentric collar locking, and lithium complex grease lubrication. Maximum speed ratings depend on bearing size and load; for example, the RCJ75-XL with a 75 mm bore is typically rated for speeds up to 1,500–2,000 RPM. For high-speed requirements, consider INA's precision bearing series or consult 3G Electric for application-specific recommendations.

What is the difference between INA drawn-cup and heavy-duty needle roller bearings?

INA drawn-cup needle roller bearings (SCE series) have a thin-walled outer ring formed from sheet steel, making them compact and lightweight, suitable for limited radial space. Heavy-duty needle roller bearings (NKI series) have a thicker, machined outer ring and can accommodate higher radial loads. For example, the SCE45 has a 0.313 in width and 7/16 in OD, while the NKI25/20-TV-XL has a 20 mm width and 38 mm OD. The NKI series also offers higher load ratings and better rigidity.

Can INA combination bearings from 3G Electric handle both radial and axial loads?

Yes, INA combination bearings like the NKIB5904 (SKU 4XFC6) integrate a needle roller bearing for radial loads and an angular contact ball bearing for axial loads in a single unit. This design saves space and simplifies mounting. The NKIB5904 has a 20 mm bore diameter and a 37 mm axial bearing outside diameter. It is suitable for applications such as machine tool spindles or gearboxes where combined loading occurs.

What materials are used in INA thrust bearing washers supplied by 3G Electric?

INA thrust bearing washers, such as the TWA512 (SKU 4XFP7), are typically made from hardened alloy steel to provide a durable raceway for needle rollers. The TWA512 has a 5/16 in bore diameter, 3/4 in outside diameter, and 1/32 in thickness, and is compatible with INA bearing 512. These washers are designed to minimize friction and wear in axial load applications.