Page 156 - needle bearings

Machined-ring needle roller bearings sealed type
NTN

Without inner ring

Type RNA49ʝʝL
Type RNA49ʝʝLL

Type RNA49ʝL Type RNA49ʝLL
(With single seal) (With double seal)

FW 14ʙ58mm

Boundary dimensions Basic load ratings Limiting Bearing numbers Abutment Mass
dynamic static dynamic static speeds dimensions
mm N kgf r/min mm kg
grease Type Type Da Db ras
Fw D C rs min 1) Cr Cor Cr Cor RNA49ʝʝL RNA49ʝʝLL max max max (approx.)
14 +0.027 22 13 0.3 7 200 8 500 735 865 10 000 RNA4900L RNA4900LL 16 20 0.3 0.016
+0.016
+0.027
16 +0.016 24 13 0.3 7 750 9 700 795 990 10 000 RNA4901L RNA4901LL 18 22 0.3 0.018
+0.033
20 +0.020 28 13 0.3 8 300 11 200 845 1 150 10 000 RNA4902L RNA4902LL 22 26 0.3 0.022
+0.033
22 +0.020 30 13 0.3 8 500 11 900 865 1 220 9 000 RNA4903L RNA4903LL 24 28 0.3 0.022
+0.033
25 +0.020 37 17 0.3 15 200 19 900 1 550 2 030 8 000 RNA4904L RNA4904LL 28 35 0.3 0.055
+0.033
30 +0.020 42 17 0.3 16 000 22 600 1 640 2 300 6 500 RNA4905L RNA4905LL 33 40 0.3 0.063
+0.041
35 +0.025 47 17 0.3 18 000 27 400 1 830 2 800 5 500 RNA4906L RNA4906LL 38 45 0.3 0.072
+0.041
42 +0.025 55 20 0.6 22 700 39 500 2 320 4 000 4 800 RNA4907L RNA4907LL 45 51 0.6 0.113
+0.041
48 +0.025 62 22 0.6 27 800 53 500 2 830 5 450 4 200 RNA4908L RNA4908LL 51 58 0.6 0.154
+0.049
52 +0.030 68 22 0.6 28 600 57 000 2 920 5 800 3 800 RNA4909L RNA4909LL 55 64 0.6 0.157
58 +0.049 72 22 0.6 30 500 64 000 3 100 6 500 3 400 RNA4910L RNA4910LL 61 68 0.6 0.160
+0.030

Note 1) Allowable minimum chamfer dimension r .

B-94