Radial Ball Bearings
The basic bearing of excellence, the ball bearing is designed to accept radial and/or axial loads according to internal design.
Standard Ranges
Sheet, solid or reinforced polyamide cage depending on the series and dimensions.
Metric Range
- 1 row: 6700, 6800, 6900,16000, 6000, 6200, 6300, 6400
- Miniature range
- Large bearings: bore ≤ 1320 mm
- 2 rows: 4200, 4300
Inch Range (R-)
- Reduced (-C2) or enhanced (-C3, -C4, -C5)
internal radial clearances - Increased precisions (-P6, -P5, -P4)
Ring Modifications
- Presence of a groove on the outer ring with (-NR) or without a snap ring (-N)
- Tapered bore (-K), spherical outer diameter (-S)
- Other materials
- Case hardened steel (E-)
- Stainless steel (SEE STAINLESS STEEL RANGE*)
- Special steel with special heat treatment for long lifetime (TMB-, TAB-)
- Stabilisation for higher-than-standard operating temperatures (TS1 / TS2 / TS3 / TSX)
Specific Ranges
Developed for tough environments.
Expansion Compensating Bearings
- EC: if a tight adjustment on the outer ring (rotating loads on the outer ring) is impossible or a risk of ring rotation exists.
- AC: similar concept to EC- range, the anti-rotation function is provided by two O- rings
* Stainless Steel Range (S- by SNR, F- by NTN): to prevent corrosion (maritime environments, food, etc.)
TOPLINE Range:
Standard dimensions for specific applications
Specific restrictions | Characteristics | Suffixes |
High temperatures | +150°C | -FT150 |
High temperatures | +200°C | -HT200 |
High temperatures | +350°C | -F600 |
Low temperatures | -60°C | -LT |
High speeds | Up to 700 000 NDm | -HV |
EMTR Range:
low noise quality level with optimised design, especially for electrical motors
MEGAOHM Range:
bearings with electrical insulation- mainly for applications with electrical motors and generators
CLEAN Range:
for environments with an extreme vacuum (semi-conductors, aeronautics, etc.)
Possible Cage Variants (suffixes)
Type of cage | NTN | SNR |
Brass | -L1 | -M |
Solid steel | -F1 | – |
Riveted steel | -JR | – |
Reinforced polyamide fibre glass | -T2 | -G15 |
Sealing
Type | Characteristics | Suffixes |
Shield | Metal | -Z / -ZZ |
Seal | Standard contact | -LU / -LLU (NTN); -E / -EE (SNR) |
Seal | Non-contact (labyrinth effect) | -LB / -LLB |
Seal | Low torque contact with pressure balancing system | -LH / -LLH |
Seal | Standard contact for high temperatures (+150°C) | -LUA / -LLUA |
Seal | Standard contact for very high temperatures (+200°C) | -LUA1 / -LLUA1 |
Seal | Standard contact for extreme temperatures (from -100°C to +200°C) |
-LUA2 / -LLUA2 |
Bearing Number Example