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Full complement cylindrical roller bearings


Design specification


Main dimensions

Main dimensions of full complement cylindrical roller bearings are specified in the dimension tables and they are in accordance with the international standards ISO 15 with the exception of the NNF 50 range, where the width of the outer ring is 1 mm smaller. All other dimensions are the same.

Structure

Full complement cylindrical roller bearings have three main parts – the inner ring equipped with flanges, cylindrical rollers and the outer ring. According to the arrangement, snap rings, angle ring or seals are added.

The following constructions are most common

NCF

These are the most common full complement cylindrical roller bearings. The inner ring has two flanges, the outer ring has one flange on one side and a snap ring, which keeps the bearing assembled on the other side. NCF bearings are able to carry axial load from one side a they are able to accommodate certain minor axial displacement of the shaft. The permissible values for this displacement are in the dimension tables.

Double row bearings

Double row full complement cylindrical roller bearings are all supplied with a lubrication groove with holes in the outer ring, which enables full lubrication access into the rolling space of each row of cylindrical rollers. The inner ring of the NNC, NNCL and NNCF design has three guiding flanges to ensure guiding accuracy of cylindrical rollers. They differentiate by the number of guiding flanges and snap rings in the outer ring. These components stop the rolling elements from falling out.

NNC

One side of outer ring is equipped with guiding flange, the other side has snap ring to keep the cylindrical rollers in place. These bearings can carry the axial load in both directions.

NNCL

NNCL bearings have the flangeless outer ring therefore certain axial bearing rings displacement against each other is accommodated.

NNCF

The outer ring has one flange and one snap ring. These components accommodate axial load transfer in one direction and also certain shaft displacement of the housing.

NNF

NNF bearings are produced with guiding flanges in the two-piece inner ring, which is held together by a retaining ring. The outer ring has a guiding flange. These bearings can also carry the axial load in both directions and as per bigger distance between individual rows of cylindrical rollers, they can transfer a tilting moments.

The outer ring of an NNF bearing is 1 mm narrower than the inner ring and has two snap ring grooves. These bearings are supplied as standard with seals on both sides and the inner space is filled with grease to enable the bearing operation in standard working conditions up to 110°C.

Tolerance

Full complement cylindrical roller bearings are produced as standard in tolerance class P0. Production of bearings with higher tolerance should be discussed in advance. Dimension tolerances are in accordance with the international standards and are stated in ISO 492 standard.

NNC design is the exception to above as it comes in various outer ring widths. They can vary up to double of the tolerance.

Radial clearance

Full complement cylindrical roller bearings are produced and supplied as standard in standard radial clearance or alternatively in C3 clearance. The radial clearance C2 (smaller than standard clearance), alternatively C4, C5 (greater than standard and C3 clearance). Radial clearance values are in accordance with the ISO 5753 standard. These values are applicable for manufactured and unassembled bearing.

Stabilisation for operation at higher temperature

For operating temperature higher than 120°C specially stabilized bearings with individually heat-treated components to ensure dimension and shape stability under long-term exposure to temperatures ranging from 150°C to 400°C (S0, S1, S2, S3 and S4) are supplied. Delivery of stabilized bearings should be discussed in advance.

Suffixes

This list shows suffixes for deliverable designs which differ from the standard:

2NR    two separately included snap rings type WRE (bearing type NNF)

BR      burnished

C3      radial internal clearance higher than CN*1

C4      radial internal clearance higher than C3*1

C5      radial internal clearance higher than C4*1

HA1   inner ring and outer ring from case hardening steel*1

HB1    inner ring and outer ring from bainite hardened*1

P6       dimensional and running tolerance less than PN*1

P5      dimensional and running tolerance less than P6*1

PH     phosphated*1

PP      sealing rings on both sides

S0     heat stabilized up to 150°C

S1     heat stabilized up to 200°C

S2    heat stabilized up to 250°C

V      full complement

VH   full complement, self-retaining set of rollers

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SelectDownloadInquiryBearingsAlternative codeBoundary dimensions mmLoad Rating kNLimiting Speed rpmMass
dDBr1SCCoGreaseOilKG
Download PDF NNF 5017 PP 2NR SL04 5017 PP 2NR 85 130 60 59 0.6 211 350 1200 2700 2.83
Download PDF NNF 5018 PP 2NR SL04 5018 PP 2NR 90 140 67 66 0.6 305 510 1100 2100 3.71
Download PDF NNF 5019 PP 2NR SL04 5019 PP 2NR 95 145 67 66 0.6 315 530 1100 1800 3.88
Download PDF NNF 5020 PP 2NR SL04 5020 P 2NR 100 150 67 66 0.6 330 550 1000 2400 3.95
Download PDF NNF 5022 PP 2NR SL04 5022 PP 2NR 110 170 80 79 0.6 395 680 900 2000 6.57
Download PDF NNF 5024 PP 2NR SL04 5024 PP 2NR 120 180 80 79 0.6 410 740 900 1700 7.04
Download PDF NNF 5026 PP 2NR SL04 5026 PP 2NR 130 200 95 94 0.6 540 960 800 2300 10.5
Download PDF NNF 130 PP 2NR SL04 130 PP 2NR 130 190 80 79 0.6 430 790 800 2400 7.5
Download PDF NNF 5028 PP 2NR SL04 5028 PP 2NR 140 210 95 94 0.6 610 1100 750 1800 11.1
Download PDF NNF 140 PP 2NR SL04 140 PP 2NR 140 200 80 79 0.6 445 840 750 1500 8
Download PDF NNF 5030 PP 2NR SL04 5030 PP 2NR 150 225 100 99 0.6 710 1260 700 2100 13.3
Download PDF NNF 150 PP 2NR SL04 150 PP 2NR 150 210 80 79 0.6 465 920 700 2200 8.4
Download PDF NNF 5032 PP 2NR SL04 5032 PP 2NR 160 240 109 108 0.6 740 1360 650 1800 16.6
Download PDF NNF 160 PP 2NR SL04 160 PP 2NR 160 220 80 79 0.6 480 970 700 1300 8.8
Download PDF NNF 5034 PP 2NR SL04 5034 PP 2NR 170 260 122 121 0.6 960 1750 600 1900 22.6
Download PDF NNF 170 PP 2NR SL04 170 PP 2NR 170 230 80 79 0.6 490 1030 650 1900 9.3
Download PDF NNF 5036 PP 2NR SL04 5036 PP 2NR 180 280 136 135 0.6 1140 2130 550 1500 30.1
Download PDF NNF 180 PP 2NR SL04 180 PP 2NR 180 240 80 79 0.6 500 1080 600 1200 9.8
Download PDF NNF 5038 PP 2NR SL04 5038 PP 2NR 190 290 136 135 0.6 1160 2210 550 1800 31.5
Download PDF NNF 190 PP 2NR SL04 190 PP 2NR 190 260 80 79 0.6 520 1130 550 1700 12.7
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