7221CT1B, Single Angular Contact Ball Bearings - Open Type
| Bearing number: |
NNU 4948 BK/SPW33 |
| Size (mm): |
240x320x80 |
| Bore Diameter (mm): |
240 |
| Outer Diameter (mm): |
320 |
| Width (mm): |
80 |
| d: |
240 mm |
| D: |
320 mm |
| B: |
80 mm |
Product Details
| Bearing number |
NNU 4948 BK/SPW33 |
| Size (mm) |
240x320x80 |
| Bore Diameter (mm) |
240 |
| Outer Diameter (mm) |
320 |
| Width (mm) |
80 |
| d |
240 mm |
| D |
320 mm |
| B |
80 mm |
| D1 |
292.2 mm |
| F |
265.3 mm |
| b |
11.1 mm |
| K |
3 mm |
| r1,2 - min. |
2.1 mm |
| r3,4 - min. |
1.1 mm |
| s |
3.7 mm |
| da - min. |
251 mm |
| da - max. |
262 mm |
| Da - max. |
309 mm |
| ra - max. |
2 mm |
| dn |
267 mm |
| Basic dynamic load rating - C |
528 kN |
| Basic static load rating - C0 |
1220 kN |
| Fatigue load limit - Pu |
118 kN |
| Limiting speed for grease lubrication |
2200 r/min |
| Limiting speed for oil lubrication |
2600 mm/min |
| Gref |
171 cm |
| Category |
Cylindrical Roller Bearing |
| Inventory |
0.0 |
| Minimum Buy Quantity |
N/A |
| Weight / Kilogram |
17.886 |
| Product Group |
B04270 |
| Bore Profile |
Tapered |
| Cage Material |
Brass |
| Precision Class |
Special Precision |
| Number of Rows of Rollers |
Double Row |
| Separable |
Inner Ring - Both Sides |
| Rolling Element |
Cylindrical Roller Bearing |
| Profile |
Complete with Outer and Inner Ring |
| Snap Ring |
No |
| Internal Clearance |
C1-Tight |
| Retainer |
Yes |
| Relubricatable |
Yes |
| Inch - Metric |
Metric |
| Other Features |
Plain Inner Ring | 3 Rib Outer Ring | High Precision Bearing | Modified Internal Design | Cage on Outer Ring ID |
| Long Description |
240MM Bore; Tapered Bore Profile; 320MM Outside Diameter; 80MM Width; Brass Cage Matetrial; Special Precision; Double Row; Inner Ring - Both Sides Separable; No Snap Ring; Relubricatable; C1-Tight Int |
| UNSPSC |
31171547 |
| Harmonized Tariff Code |
8482.50.00.00 |
| Noun |
Bearing |
| Manufacturer Item Number |
NNU 4948 BK/SPW33 |
| Weight / LBS |
39.397 |
| Bore |
9.449 Inch | 240 Millimeter |
| Outside Diameter |
12.598 Inch | 320 Millimeter |
| Width |
3.15 Inch | 80 Millimeter |
| r1,2 min. |
2.1 mm |
| r3,4 min. |
1.1 mm |
| s max. |
3.7 mm |
| da min. |
251 mm |
| da max. |
262 mm |
| Da max. |
309 mm |
| Basic dynamic load rating C |
528 kN |
| Basic static load rating C0 |
1220 kN |
| Fatigue load limit Pu |
118 kN |
| Attainable speed for grease lubrication |
2200 r/min |
| Attainable speed for oil-air lubrication |
2600 r/min |
| Reference grease quantity Gref |
171 cm³ |
| Static radial stiffness (guideline value) |
6340 N/µm |
| Mass bearing |
17.5 kg |
Company Profile
| Worktime |
9.00--18.00 |
| Phone |
0065-31591338 |
| Fax |
0065-31591338 |