NTN-SNR Roller Bearing Technology

Roller bearing technology

Roller bearings (standard and special)

Ball bearings 

  • Groove ball bearings
  • Angular ball bearings
  • Four-point bearings
  • Two-row self-aligning ball bearings
  • Miniature bearings
  • Bearings with small cross-section

Taper roller bearings- one-row- two-row- four-row- ECO-TOP product range- NTN BOWER range of self-aligning roller bearings

Cylindrical roller bearings

  • one-row
  • two-row
  • four-row
  • Four-row, full complement
  • Cross roller bearings


Needle bearings

  • Needle cage
  • Needle bush
  • Solid ring needle bearings
  • Axial needle bearings or axial roller bearings
  • Combined roller bearings
  • Curved rollers

High-precision bearings

Axial bearings

Rolling bodies and accessories       

Bearing units

Housing bearings

  • Standard range with over 25,000 possible solutions
  • One of the most diverse ranges of housing bearings on the market. Housing materials: Grey cast iron, sheet steel, stainless steel, thermoplast
  • Bearing inserts made of chrome steel with forged inner and outer rings; steel sheet cage
  • Effective corrosion protection by passivation (for grey cast iron housing bearings)
  • Stainless steel protective caps for grey cast iron and stainless steel units, plastic caps for thermoplast units
  • Compact and efficient roller bearing systems
  • Different types of bearing inserts
  • Bearing inserts also available with cylindrical outer diameter
  • Bearing inserts also for all standard hole diameters in imperial dimensions
  • Bearing housings

Two-piece bearing housings SNC

  • Excellent rigidity and sturdiness under all load conditions
  • Optimised vibration behaviour
  • Improved heat dissipation
  • Increased service life of roller bearing
  • Reduction of stresses in roller bearing
  • Easy assembly and reduced commissioning times
  • Shaft diameter: 20 to 160 mm

Two-piece bearing housings SD31, large dimensions

  • Suitable for self-aligning roller bearings
  • Economically efficient
  • Suitable for constructions such as gyratory crushers, screw conveyors, hammer mills and other machines that operate under the hardest conditions

SPW/SFCW – Bearing housings for high loads

  • Suitable for very harsh environmental conditions in heavy industry
  • Corrosion-protected roller bearings and housings
  • Quick replacement of patented bearing insert
  • Sealed self-aligning roller bearings
  • Fast commissioning, increased productivity
  • SPW range replaceable with bearing housings from the SN series
  • Shaft diameter: 50 to 140 mm

One-piece bearing housings ZLG / DLG

  • For the assembly of two or three roller bearings
  • Grease lubrication
  • Suitable for high operating speeds (industrial fans)
  • Runs very quietly thanks to exact placement of bearings in housing
  • Felt seal with additional V-ring seal
  • Easy assembly on clamping surface
  • Shaft diameter ZLG: 30 to 120 mm / DLG: 70 to 120 mm

Bearing housings for special applications 722500, F11200, TVN, TN

  • Compact, sealed grey cast iron housings
  • TVN: suitable for operating temperatures up to +350°C
  • Suitable for critical environments: heat and humidity / heat and dryness
  • Possible applications in designs from the lime sandstone or clinker industry
  • TVN/TN; can be installed in any desired position
  • Shaft diameter TVN: 20 to 75 mm / TN: 20 to 60 mm
  • F11200 / 722500: Flange bearing housing
  • Shaft diameter F11200: 20 to 50 mm / 722500: 20 to 100 mm

One-piece bearing housing ZLOE

  • Equipped with two radial ball bearings or a combination of one radial ball bearing and one cylindrical roller bearing
  • Suitable for applications with high loads and high operating temperatures
  • Especially suitable for applications with high speeds, e.g. industrial fans
  • Runs very quietly thanks to exact placement of bearings in housing
  • Easy assembly of bearing unit on clamping surface
  • Efficient, low-friction seal thanks to labyrinth system
  • Can be used with circulating oil lubrication or oil injection lubrication
  • Shaft diameter: 75 to 120 mm

Two-piece bearing housings SNOE

  • Suitable for self-aligning roller bearings
  • For applications with high speeds and high load ratings
  • Housing material: Ductile cast iron for especially high strength and torsion resistance
  • Internal oil distribution via an oil delivery ring
  • Sealing via labyrinth sealing system
  • Equipped with an oil level indicator
  • Optionally usable with circulating oil lubrication, oil cooling or oil preheating system
  • Excellent oil dissipation
  • Areas of application: Industrial fans, hammer mills, oscillating sieve systems, stone crushers
  • Shaft diameter: 70 to 260 mm (largest oil-lubricated standard bearing housing on the market)

Two-piece bearing housings SNOL (compact design)

  • Suitable for self-aligning roller bearings
  • Low-friction oil labyrinth sealing system

SNOL bearing housings can replace grease-lubricated units from the SN series.
This may be required for:

  • increasing operating speeds
  • increased operating temperatures
  • extending operating times
  • extending service intervals
  • Equipped with an oil level indicator
  • Shaft diameter: 60 to 140 mm

Tool and Training/Experts & Tools
Tools

Installation, removal and control of your roller bearings: Essential tools that extend the service life and proper functioning of the system

Cold installation:
The tool case for a quick, reliable and precise bearing installation

Hot installation:
Heating by induction: Practical, easy, reliable, environmentally friendly.

Hydraulic installation:
Precise and effortless with a revolutionary hydraulic nut whose "back and forth" functioning principle offers unique ease of operation.

Removal tools:
Hydraulic or mechanical dismantling:
All types of removal devices for a safe and clean removal regardless of the position and size of the bearing.

Display and measuring devices:
Easy, reliable and precise monitoring of the temperature of roller bearings and other components by means of laser scanning.    

Experts & Tools offers many other tools for the installation, removal and control of roller bearings and other components.

Experts & Tools: Services
The NTN-SNR team of experts will support your company in increasing your performance.

Training
We will train your installers and design engineers in the selection and installation of roller bearings. With our BEBOX, we carry out customised training programmes for theory and practice in our training rooms or at your location. Our flexibility makes the difference!

Roller bearing diagnostics
We examine and analyse your defective roller bearings at our laboratories, giving you suggestions for improvement and for extending service life.

Maintenance for roller bearings and repair of machine tool spindles.

Let your roller bearings be repaired by a company that is used to repairing roller bearings for aircraft engines or high-speed trains.

Technical support for bearing and lubrication systems

Rely on our experts to monitor your maintenance work: Bearing installation and removal, set-up and improvement of lubrication systems, vibration analyses, and much more.

Maintenance control
Take advantage of an assessment of your maintenance organisation carried out by the maintenance managers at our factory. Increase productivity thanks to efficient action plans resulting from a peer-to-peer approach based on customer proximity.

Tool rental
Rent rarely needed, cost-intensive tools with us:
Induction heating devices, hydraulic nuts and many other tools are available for you at any time.

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