Page 2823 - Benma | Blue book 5.0

Parts for machine construction Tel. +41 44 736 63 63 • Fax +41 44 736 63 00 • sales@brw.ch
7 66600 Needle roller bearings SKF
with inner ring
Needle roller bearings type NA 49, NA 69, NKI and NKIS
Needle roller bearings with raceways made of carbon chromium bearing steel are bearings with a low sectional height and a relatively high
load carrying capacity. Needle roller bearings with an inner ring are used for applications where the shaft cannot be hardened and ground. The
permissible axial displacement of the shaft relative to the housing is limited.
The bearings with flanges on the outer ring are designed primarily as single-row bearings. In every instance the outer ring, needle rollers and
cage constitute a self-retaining unit. Bearings of the NA 49 series are also available with contact seals (suffix 2RS). This provides the bearings with
effective protection against infiltration of pollutants and against leakage of lubrication grease. The sealed bearings‘ inner ring is designed 1 mm
wider and has a lubrication hole. This ensures that the bearings continue to be effectively sealed even in the event of small axial displacements
of the shaft relative to the housing.
Main dimensions: ISO 15:2011 / DIN 620:2000 / ISO 1206:2001 / DIN 617:1993 at the bearings with row (R)NA 48, (R)NA 49 und (R)NA 69
Prefixes:
NA 49 / NA 69 Needle roller bearings with flanges on the outer ring, with inner ring
NKI / NKIS Needle roller bearings with flanges on the outer ring, with inner ring
Suffixes:
2RS Sheet steel reinforced contact seals of acrylonitrile-butadiene rubber (NBR) on both side
TN Injection moulded cage of polyamide 66, the cage is glass fibre reinforced

Order ID Type d D B Charge de base dyn. Charge de base stat. Vitesse limite
mm mm mm kN kN min -1
766600.0050 NKI 5/12 TN 5 15 12 3.8 4.25 36‘000
766600.0100 NKI 5/16 TN 5 15 16 5.01 5.85 36‘000
766600.0150 NKI 6/12 TN 6 16 12 4.4 5.2 34‘000
766600.0200 NKI 6/16 TN 6 16 16 5.72 7.2 34‘000
766600.0250 NKI 9/12 9 19 12 6.71 8.15 30‘000
766600.0300 NKI 9/16 9 19 16 9.13 12 30‘000
766600.0350 NA 4900 10 22 13 8.8 10.4 28‘000
766600.0400 NA 4900.2RS 10 22 14 7.37 8.15 12‘000
766600.0450 NA 4901 12 24 13 9.9 12.2 26‘000
766600.0500 NA 4901.2RS 12 24 14 8.09 9.65 11‘000
766600.0550 NKI 12/16 12 24 16 11.7 15.3 26‘000
766600.0600 NKI 12/20 12 24 20 14.5 20 26‘000
766600.0650 NA 6901 12 24 22 16.1 23.2 26‘000
766600.0700 NKI 15/16 15 27 16 13.4 19 24‘000
766600.0750 NKI 15/20 15 27 20 16.5 25.5 24‘000
766600.0800 NA 4902 15 28 13 11.2 15.3 22‘000
766600.0850 NA 4902.2RS 15 28 14 9.13 12 9‘500
766600.0900 NA 6902 15 28 23 17.2 27 22‘000
766600.0950 NKI 17/16 17 29 16 13.8 20.4 22‘000
766600.1000 NKI 17/20 17 29 20 17.2 27 22‘000
766600.1050 NA 4903 17 30 13 11.4 16.3 20‘000
766600.1100 NA 4903.2RS 17 30 14 9.52 12.9 9‘000
766600.1150 NA 6903 17 30 23 18.7 30.5 20‘000
766600.1200 NKIS 17 17 37 20 26 33.5 17‘000
766600.1250 NKI 20/16 20 32 16 15.4 24.5 19‘000
766600.1300 NKI 20/20 20 32 20 19 32.5 19‘000
766600.1350 NA 4904 20 37 17 21.6 28 17‘000
766600.1400 NA 4904.2RS 20 37 18 19.4 22.4 7‘500
766600.1450 NA 6904 20 37 30 35.2 53 17‘000
766600.1500 NKIS 20 20 42 20 28.6 39 15‘000
766600.1550 NKI 22/16 22 34 16 15.7 26 17‘000
766600.1600 NKI 22/20 22 34 20 19.4 34.5 17‘000
766600.1650 NKI 25/20 TN 25 38 20 24.6 42.5 15‘000
766600.1700 NKI 25/30 25 38 30 31.9 60 15‘000
766600.1750 NA 4905 25 42 17 24.2 34.5 15‘000
766600.1800 NA 4905.2RS 25 42 18 21.6 27.5 6‘300
766600.1850 NA 6905 25 42 30 38 62 15‘000
766600.1900 NKIS 25 25 47 22 34.1 46.5 13‘000
766600.1950 NKI 28/20 28 42 20 26.4 48 14‘000
766600.2000 NKI 28/30 28 42 30 34.1 65.5 14‘000
766600.2050 NKI 30/20 TN 30 45 20 27.5 52 13‘000
766600.2100 NKI 30/30 TN 30 45 30 40.2 85 13‘000
766600.2150 NA 4906 30 47 17 25.5 39 13‘000
766600.2200 NA 4906.2RS 30 47 18 23.3 32 5‘600
766600.2250 NA 6906 30 47 30 42.9 75 13‘000
766600.2300 NKIS 30 30 52 22 36.9 54 12‘000
766600.2350 NKI 32/20 32 47 20 25.1 46.5 12‘000
766600.2400 NKI 32/30 32 47 30 36.9 76.5 12‘000
766600.2450 NKI 35/20 TN 35 50 20 29.7 60 11‘000
766600.2500 NKI 35/30 35 50 30 38 83 11‘000
766600.2550 NA 4907 35 55 20 31.9 54 11‘000

2812 Brütsch/Rüegger Tools Ltd. • Heinrich Stutz-Strasse 20 • P.O. Box • CH-8902 Urdorf • www.brw.ch