KOYO HK2018RS Needle Non Thrust Roller Bearings
| Brand Name |
KOYO HK2018RS Needle Non Thrust Roller Bearings |
| Model Number |
HK2018RS |
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
| PDF |
HK2018RS |
Product Details
| Bearing number |
71909 CB/HCP4A |
| Size (mm) |
68x45x12 |
| Bore Diameter (mm) |
68 |
| Outer Diameter (mm) |
45 |
| Width (mm) |
12 |
| d |
45 mm |
| D |
68 mm |
| B |
12 mm |
| d1 |
53.45 mm |
| d2 |
52.4 mm |
| D2 |
61.8 mm |
| r1,2 - min. |
0.6 mm |
| r3,4 - min. |
0.3 mm |
| a |
16.1 mm |
| da - min. |
48.2 mm |
| db - min. |
48.2 mm |
| Da - max. |
64.8 mm |
| Db - max. |
66 mm |
| ra - max. |
0.6 mm |
| rb - max. |
0.3 mm |
| dn |
54.2 mm |
| Basic dynamic load rating - C |
7.4 kN |
| Basic static load rating - C0 |
5.7 kN |
| Fatigue load limit - Pu |
0.245 kN |
| Limiting speed for grease lubrication |
32000 r/min |
| Limiting speed for oil lubrication |
50000 mm/min |
| Ball - Dw |
4.762 mm |
| Ball - z |
27 |
| Gref |
1.75 cm3 |
| Calculation factor - f0 |
9.7 |
| Preload class A - GA |
24 N |
| Preload class B - GB |
48 N |
| Preload class C - GC |
145 N |
| Calculation factor - f |
1 |
| Calculation factor - f2A |
1 |
| Calculation factor - f2B |
1.03 |
| Calculation factor - f2C |
1.08 |
| Calculation factor - fHC |
1.01 |
| Preload class A |
32 N/micron |
| Preload class B |
41 N/micron |
| Preload class C |
66 N/micron |
| r1,2 min. |
0.6 mm |
| r3,4 min. |
0.3 mm |
| da min. |
48.2 mm |
| db min. |
48.2 mm |
| Da max. |
64.8 mm |
| Db max. |
66 mm |
| ra max. |
0.6 mm |
| rb max. |
0.3 mm |
| Basic dynamic load rating C |
9.95 kN |
| Basic static load rating C0 |
9.65 kN |
| Fatigue load limit Pu |
0.245 kN |
| Attainable speed for grease lubrication |
32000 r/min |
| Attainable speed for oil-air lubrication |
50000 r/min |
| Ball diameter Dw |
4.762 mm |
| Number of balls z |
27 |
| Reference grease quantity Gref |
1.75 cm³ |
| Preload class A GA |
24 N |
| Static axial stiffness, preload class A |
32 N/µm |
| Preload class B GB |
48 N |
| Static axial stiffness, preload class B |
41 N/µm |
| Preload class C GC |
145 N |
| Static axial stiffness, preload class C |
66 N/µm |
| Calculation factor f |
1.08 |
| Calculation factor f1 |
1 |
| Calculation factor f2A |
1 |
| Calculation factor f2B |
1.03 |
| Calculation factor f2C |
1.08 |
| Calculation factor fHC |
1.01 |
| Calculation factor f0 |
9.7 |
| Mass bearing |
0.13 kg |
Company Profile
| Worktime |
Seg - Sex (9.00 - 18.00) Sáb (9: 00-12: 00) |
| Phone |
(65) 8257 8518 |
| Fax |
(65) 6258 7399 |