

IKO BA 76 Z,BA 77 Z,BA 78 Z,BA 710 Z SHELL TYPE NEEDLE ROLLER BEARINGS
IKO BA 76 Z,BA 77 Z,BA 78 Z,BA 710 Z 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 | |
11.112 ( 7╱16 ) | BA 76 Z BA 77 Z BA 78 Z BA 710 Z ─ | 4.8 5.6 6.4 7.9 ─ | BAM 76 BAM 77 BAM 78 BAM 710 ─ | 5.3 6.2 7 8.5 ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ | ─ ─ ─ ─ YB 78 | ─ ─ ─ ─ 8.2 |
─ ─ | ─ ─ | ─ ─ | ─ ─ | BHA 78 Z ─ | 9.3 ─ | BHAM 78 ─ | 10 ─ | ─ YBH 78 | ─ 10.5 | |
BA 85 Z | 4.4 | BAM 85 | 5.2 | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | |
BA 86 Z | 5.3 | BAM 86 | 6.1 | |||||||
BA 87 Z | 6.3 | BAM 87 | 7 | |||||||
BA 88 Z | 7.2 | BAM 88 | 7.9 | |||||||
BA 810 Z | 8.9 | BAM 810 | 9.6 | |||||||
BA 812 Z | 10.6 | BAM 812 | 11.3 | |||||||
12.700 ( 1╱2 ) | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | ─ ─ ─ ─ ─ ─ | YB 84 YB 86 YB 87 YB 88 YB 810 YB 812 | 4.3 6.7 7.9 9.1 11.5 13.9 |
─ | ─ | ─ | ─ | BHA 87 Z BHA 88 Z BHA 810 Z BHA 812 Z ─ | 9.1 | BHAM 87 BHAM 88 BHAM 810 BHAM 812 ─ | 9.9 | ─ | ─ | |
─ | ─ | ─ | ─ | 10.4 | 11.3 | ─ | ─ | |||
─ | ─ | ─ | ─ | 12.5 | 13.3 | ─ | ─ | |||
─ ─ | ─ ─ | ─ ─ | ─ ─ | 15 ─ | 15.8 ─ | ─ YBH 810 | ─ 16 |
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 | t2 Max. | Shaft dia. h6 | Housing bore dia. J7 | ||||||
Max. | Min. | Max. | Min. | ||||||||
11.112( 7╱16) 11.112( 7╱16) 11.112( 7╱16) 11.112( 7╱16) 11.112( 7╱16) | 15.875( 5╱8) 15.875( 5╱8) 15.875( 5╱8) 15.875( 5╱8) 15.875( 5╱8) | 9.52(.375) 11.13(.438) 12.70(.500) 15.88(.625) 12.70(.500) | 1 1 1 1 ─ |
11.112 |
11.101 |
15.885 |
15.867 | 3 290 4 150 4 460 6 020 10 100 | 3 470 4 680 5 130 7 550 15 900 | 35 000 35 000 35 000 35 000 14 000 | ─ ─ ─ ─ ─ |
11.112( 7╱16) 11.112( 7╱16) | 17.462(11╱16) 17.462(11╱16) | 12.70(.500) 12.70(.500) | 1.3 ─ | 11.112 | 11.101 | 17.472 | 17.454 | 5 680 12 500 | 5 970 15 800 | 35 000 14 000 | ─ ─ |
12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) | 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) | 7.92(.312) 9.52(.375) 11.13(.438) 12.70(.500) 15.88(.625) 19.05(.750) | 1 1 1 1 1 1 |
12.700 |
12.689 |
17.472 |
17.454 | 2 490 3 470 4 380 4 710 6 350 7 840 | 2 510 3 850 5 190 5 700 8 380 11 000 | 30 000 30 000 30 000 30 000 30 000 30 000 | ─ ─ ─ IRB 58 ─ ─ |
12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) | 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) 17.462(11╱16) | 6.35(.250) 9.52(.375) 11.13(.438) 12.70(.500) 15.88(.625) 19.05(.750) | ─ ─ ─ ─ ─ ─ |
12.700 |
12.689 |
17.472 |
17.454 | 5 260 8 150 9 530 10 800 13 400 15 800 | 7 150 12 600 15 300 18 100 23 700 29 300 | 12 000 12 000 12 000 12 000 12 000 12 000 | ─ ─ ─ IRB 58 ─ ─ |
12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) 12.700( 1╱2) | 19.050( 3╱4) 19.050( 3╱4) 19.050( 3╱4) 19.050( 3╱4) 19.050( 3╱4) | 11.13(.438) 12.70(.500) 15.88(.625) 19.05(.750) 15.88(.625) | 1.3 1.3 1.3 1.3 ─ |
12.700 |
12.689 |
19.062 |
19.041 | 5 670 6 040 8 830 11 100 16 300 | 6 120 6 650 10 900 14 500 23 500 | 30 000 30 000 30 000 30 000 12 000 | ─ IRB 58 ─ ─ ─ |
IKO BA 76 Z,BA 77 Z,BA 78 Z,BA 710 Z 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.