IKO BA 2012 Z,BAM 2012,BA 2016 Z,BAM 2016 SHELL TYPE NEEDLE ROLLER BEARINGS
IKO BA 2012 Z,BAM 2012,BA 2016 Z,BAM 2016 Description
| Shaft dia.
mm (inch) | Identification number | |||||||||
| Standard | Mass (Ref. ) g | Closed end | Mass (Ref. ) g | Standard | Mass (Ref. ) g | Closed end | Mass (Ref. ) g | Grease retained | Mass (Ref. ) g | |
|
31.750 1 1╱4 ） | BA 208 Z BA 2010 Z BA 2012 Z BA 2016 Z BA 2020 Z | 21.5 27 32.5 43 53.5 | BAM 208 BAM 2010 BAM 2012 BAM 2016 BAM 2020 | 26 31.5 37 47.5 58 | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ |
| ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | YB 2010 YB 2012 YB 2016 YB 2018 YB 2020 | 35 42.5 57 64 68 | |
| ─ ─ ─ ─ | ─ ─ ─ ─ | ─ ─ ─ ─ | ─ ─ ─ ─ | BHA 208 Z BHA 2012 Z BHA 2016 Z BHA 2020 Z | 34.5 49.5 66 81.5 | BHAM 208 BHAM 2012 BHAM 2016 BHAM 2020 | 40 54.5 71 86.5 | ─ ─ ─ ─ | ─ ─ ─ ─ | |
| 33.338 1 5╱16） | BA 218 Z BA 2110 Z BA 2112 Z | 28.5 35.5 43 | BAM 218 BAM 2110 BAM 2112 | 35 41.5 49 | ─ ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ ─ ─ | ─ ─ ─ |
| Boundary dimensions mm(inch) | Standard mounting dimensions mm | Basic dynamic load rating C N | Basic static load rating C0 N | Allowable rotational speed(1)
min-1 | Assembled inner ring | |||||||
| Fw | D | C | t1 Max. | Shaft dia. h6 | Housing bore dia. J7 | |||||||
| Max. | Min. | Max. | Min. | |||||||||
| 31.750（1 1╱4） | 38.100（1 1╱2） | 12.70( .500) | 2.8 | 9 100 | 14 700 | 12 000 | IRB 168 | |||||
| 31.750（1 1╱4） | 38.100（1 1╱2） | 15.88( .625) | 2.8 | 12 500 | 22 200 | 12 000 | IRB 1610 | |||||
| 31.750（1 1╱4） | 38.100（1 1╱2） | 19.05( .750) | 2.8 | 31.750 | 31.734 | 38.114 | 38.089 | 15 700 | 29 600 | 12 000 | IRB 1612 | |
| 31.750（1 1╱4） | 38.100（1 1╱2） | 25.40(1.000) | 2.8 | |||||||||
| 21 500 | 44 300 | 12 000 | IRB 1616 | |||||||||
| 31.750（1 1╱4） | 38.100（1 1╱2） | 31.75(1.250) | 2.8 | 26 900 | 59 200 | 12 000 | IRB 1620 | |||||
| 31.750（1 1╱4） 31.750（1 1╱4） 31.750（1 1╱4） 31.750（1 1╱4） 31.750（1 1╱4） | 38.100（1 1╱2） 38.100（1 1╱2） 38.100（1 1╱2） 38.100（1 1╱2） 38.100（1 1╱2） | 15.88( .625) | ─ | 27 000 | 59 000 | 4 500 | IRB 1610 | |||||
| 19.05( .750) | ─ | 31 800 | 72 500 | 4 500 | IRB 1612 | |||||||
| 25.40(1.000) | ─ | 31.750 | 31.734 | 38.114 | 38.089 | 40 900 | 100 000 | 4 500 | IRB 1616 | |||
| 28.58(1.125) | ─ | 45 300 | 114 000 | 4 500 | ─ | |||||||
| 31.75(1.250) | ─ | 49 400 | 128 000 | 4 500 | IRB 1620 | |||||||
| 31.750（1 1╱4） | 41.275（1 5╱8） | 12.70( .500) | 3.4 | 13 700 | 17 600 | 12 000 | IRB 168 | |||||
| 31.750（1 1╱4） 31.750（1 1╱4） 31.750（1 1╱4） | 41.275（1 5╱8） 41.275（1 5╱8） 41.275（1 5╱8） | 19.05( .750) 25.40(1.000) 31.75(1.250) | 3.4 3.4 3.4 | 31.750 | 31.734 | 41.289 | 41.264 | 24 100 33 200 40 000 | 36 400 55 000 69 600 | 12 000 12 000 12 000 | IRB 1612 IRB 1616 IRB 1620 | |
| 33.338（1 5╱16 33.338（1 5╱16 33.338（1 5╱16 | 41.275（1 5╱8 41.275（1 5╱8 41.275（1 5╱8 | 12.70( .500) 15.88( .625) 19.05( .750) | 2.8 2.8 2.8 | 33.338 | 33.322 | 41.289 | 41.264 | 11 100 15 400 19 300 | 15 800 23 900 32 100 | 11 000 11 000 11 000 | IRB 168-1 IRB 1610-1 IRB 1612-1 | |
IKO BA 2012 Z,BAM 2012,BA 2016 Z,BAM 2016 Nots
Note(1) Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.
Remarks1. ”W” in the identification number indicates that rolling elements are arranged in double rows.
2. Shell Type Grease Retained Full Complement Needle Roller Bearings are provided with prepacked grease. Standard type and
closed end type bearings are not provided with prepacked grease, so perform proper lubrication when using these types of
bearings.
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