IKO BR 303920 UU,BR 324120 UU MACHINED TYPE NEEDLE ROLLER BEARINGS
IKO BR 303920 UU,BR 324120 UU Description
Shaft dia. mm (inch) | Identification number
With two seals | Mass (Ref.)
g | Boundary dimensions mm(inch) | Standard mounting dimensions mm | |||
Fw | D | C | Da Max. | r (1) as max | |||
15.875 (5╱8) | BR 101816 UU | 54 | 15.875( 5╱8) | 28.575(1 1╱8) | 25.400(1 ) | 24.5 | 0.6 |
19.050 (3╱4) | BR 122016 UU | 68 | 19.050( 3╱4) | 31.750(1 1╱4) | 25.400(1 ) | 26.5 | 1.0 |
22.225 (7╱8) | BR 142216 UU | 76 | 22.225( 7╱8) | 34.925(1 3╱8) | 25.400(1 ) | 29.7 | 1.0 |
25.400 (1) | BR 162416 UU | 83 | 25.400(1 ) | 38.100(1 1╱2) | 25.400(1 ) | 32.9 | 1.0 |
28.575 (11╱8) | BR 182620 UU | 115 | 28.575(1 1╱8) | 41.275(1 5╱8) | 31.750(1 1╱4) | 36.0 | 1.0 |
31.750 (11╱4) | BR 202820 UU | 124 | 31.750(1 1╱4) | 44.450(1 3╱4) | 31.750(1 1╱4) | 39.2 | 1.0 |
34.925 (13╱8) | BR 223020 UU | 134 | 34.925(1 3╱8) | 47.625(1 7╱8) | 31.750(1 1╱4) | 42.4 | 1.0 |
38.100 (11╱2) | BR 243320 UU | 168 | 38.100(1 1╱2) | 52.388(2 1╱16) | 31.750(1 1╱4) | 45.1 | 1.5 |
41.275 (15╱8) | BR 263520 UU | 179 | 41.275(1 5╱8) | 55.562(2 3╱16) | 31.750(1 1╱4) | 48.3 | 1.5 |
44.450 (13╱4) | BR 283720 UU | 193 | 44.450(1 3╱4) | 58.738(2 5╱16) | 31.750(1 1╱4) | 51.5 | 1.5 |
47.625 (17╱8) | BR 303920 UU | 202 | 47.625(1 7╱8) | 61.912(2 7╱16) | 31.750(1 1╱4) | 54.7 | 1.5 |
50.800 (2) | BR 324120 UU | 216 | 50.800(2 ) | 65.088(2 9╱16) | 31.750(1 1╱4) | 57.8 | 1.5 |
Basic dynamic load rating C N | Basic static load rating C0 N | Allowable rotational speed(2)
min-1 |
18 300 | 20 000 | 12 000 |
20 700 | 24 400 | 10 000 |
21 600 | 26 900 | 9 000 |
23 600 | 31 300 | 8 000 |
34 900 | 49 900 | 7 000 |
36 000 | 53 500 | 6 500 |
38 500 | 60 000 | 5 500 |
43 700 | 66 900 | 5 500 |
44 800 | 70 900 | 4 500 |
47 500 | 78 200 | 4 500 |
48 500 | 82 100 | 4 000 |
51 000 | 89 400 | 4 000 |
IKO BR 303920 UU,BR 324120 UU Nots
Notes(1) Maximum permissible corner radius of the housing
(2) Allowable rotational speed applies to grease lubrication.
Remarks1. The outer ring has an oil groove and an oil hole.
2. Bearings are provided with prepacked grease.
3. If one side sealed type are needed, please contact IKO.