This NTN bearing measures 55x100x21 mm and weighs 0.65 kg; the specification table carries the supplementary technical details. Point contact between ball and raceway keeps frictional torque low, which is why this type runs faster and cooler than any other rolling bearing. The deep, closely conforming raceway grooves in the inner and outer ring capture the balls positively, so the bearing takes radial load and moderate axial load in both directions without a second bearing position to oppose it.
Because the ball touches the raceway at a point, friction and heat stay low — the precondition for high speeds and for grease-for-life designs. The limits follow from that same geometry: the small contact area caps load capacity against a roller bearing of equal size, and the bearing tolerates misalignment within narrow limits only, since angular error transfers straight into the raceway grooves.
Seats in shaft and housing must therefore be aligned and geometrically accurate; where shaft deflection is expected, a self-aligning type belongs in that position. The non-contact seal works with a narrow gap rather than bearing against a face: it protects better than a shield and costs less frictional torque than a contact seal. Rings and rolling elements are made of through-hardened standard bearing steel.
The normal radial clearance recorded corresponds to the standard class and suits ordinary fits and temperature conditions.
ManufacturerNTN
Bearing typeDeep-groove ball bearings
Bore d55 mm
Outer Ø D100 mm
Width B21 mm
Weight0.65 kg
Sealsnon-contact seals on both sides (NBR)
Clearancenormal radial internal clearance
Cagepressed steel cage
Materialstandard bearing steel
Tolerancetolerance class P0/PN (ABEC 1)
Bore typecylindrical bore
€44.01/ pc
incl. VAT, plus shipping · price drops with quantity
In stock
Typically ready to ship in 1–2 days
In stock · ships via DPD, UPS or Deutsche Post
QtyUnit priceDisc.
1 – 4€44.01—
5 – 9€42.69−3 %
10 – 24€41.81−5 %
25 – 49€40.49−8 %
50 – 99€39.61−10 %
4 more for −3% volume discount
From 100 pcs: price and lead time on request – subject to review.
Total (1 pc)€44.01
NTN 6211 LLBNR/2AS Kugellager (55x100x21)
— 55 x 100 x 21 mm
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✓Free shipping over €100 · 14-day returns
✓Purchase on invoice – first order paid before dispatch, then 14-day terms for approved business customers
Same dimensions means the same bearing type and matching main dimensions (d × D × B). Sealing, cage, internal clearance and execution (e.g. material, precision, grease fill) are encoded in the suffix and may differ — please check before ordering. Equivalent additionally means the same sealing, internal clearance and tolerance class; the cage and other suffix features (e.g. lubrication groove) may differ.
