Take-up ball bearing units, consisting of an insert bearing based on a sealed deep groove ball bearing mounted in a grey cast iron housing. Typically mounted in take-up frames, the unit has an inner ring extended on both sides and is locked by tightening two set screws on the inner ring, which makes it easy to mount. Units with designation suffix /H feature a 120° angle of separation between the set screws that contributes to a higher stability and a better load balance.
| Compliance with standard |
JIS
|
| Purpose specific |
For material handling applications
|
| Material, housing |
Cast iron
|
| Sealing, bearing |
Seal and flinger on both sides
|
| Sealing type, bearing |
Contact, standard
|
| Sealing, unit |
Optional end cover
|
| Coating |
Without
|
| d |
70 mm
|
Bore diameter |
|---|---|---|
| d1 |
≈ 87 mm
|
Shoulder diameter of inner ring |
| A |
70 mm
|
Overall width |
| A1 |
26 mm
|
Width of piloting groove |
| A2 |
46 mm
|
Width of flange in which piloting grooves are provided |
| A5 |
41.5 mm
|
Standout of end cover |
| B |
74.6 mm
|
Width of inner ring |
| B4 |
12 mm
|
Distance from locking device side face to thread centre |
| H |
167 mm
|
Overall height |
| H1 |
151 mm
|
Distance between bottoms of piloting grooves |
| H2 |
111 mm
|
Height of attachment end |
| L |
225 mm
|
Overall length |
| L1 |
137 mm
|
Distance from attachment end face to centre line of spherical seat diameter |
| L2 |
21 mm
|
Length attachment end |
| L3 |
121 mm
|
Length of piloting groove |
| N |
41 mm
|
Diameter of attachment bolt hole |
| N1 |
32 mm
|
Length of attachment slot |
| N2 |
70 mm
|
Height of attachment slot |
| s1 |
44.4 mm
|
Distance from locking device side face to raceway centre |
| RG |
1/8-27 NPT
|
Housing thread for the grease fitting |
|---|---|---|
| R1 |
5 mm
|
Axial position of the housing thread |
| Rα |
30 °
|
Angular position of the housing thread |
| DN |
6.589 mm
|
Diameter of head sphere of grease fitting |
|---|---|---|
| SWN |
11.11 mm
|
Hexagonal key size for the grease fitting |
| GN |
1/8-27 NPT
|
Thread of grease fitting |
| Basic dynamic load rating | C |
62.4 kN
|
|---|---|---|
| Basic static load rating | C0 |
44 kN
|
| Fatigue load limit | Pu |
1.86 kN
|
| Limiting speed |
2 250 r/min
|
|
|
Limiting speed with shaft tolerance h6
|
| Mass bearing unit |
6.9 kg
|
| Set screw | G2 |
M12x1.5
|
|---|---|---|
| Hexagonal key size for set screw |
6.08 mm
|
|
| Recommended tightening torque for set screw |
28.5 N·m
|
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