663 Bearing Dimensions
663 inch tapered roller bearing cone, paired with the 653 cup: 82.55 mm (3.250 in) bore, 146.05 mm OD, 41.275 mm width (FULI catalog). Quote.
663 specifications
| Cone bore d | 82.55 mm (3.250 in) |
|---|---|
| Cone width B | 41.275 mm |
| Matching cup | 653 |
| Cup outside diameter D | 146.05 mm (5.750 in) |
| Total width T | 41.275 mm (1.625 in) — assembled width of cup and cone |
| Seal / shield options | Open (cup and cone, no seals) |
| Material | GCr15 chrome bearing steel (rings and rolling elements) |
| Radial clearance | Set during mounting (adjustable, not a C-class value) |
| Load ratings | See the cone and cup pairs table below |
663 cone and cup pairs
| Cone | Cup | Bore d | OD D | Width T | Cr (kN) | C0r (kN) |
|---|---|---|---|---|---|---|
| 663 | 653 | 82.55 mm (3.250 in) | 146.05 mm (5.750 in) | 41.275 mm (1.625 in) | 210.4 | 302.9 |
Dimensions from FULI's catalog. A cone (inner ring with rollers and cage) and a cup (outer ring) make up one bearing; the pairs above are the matching numbers listed in FULI's catalog. Values from FULI's catalog; confirm for your application.
How to read the 663 designation
| Segment | Meaning |
|---|---|
| 663 | Designation breakdown not available for this model. |
663 interchange
663 is an inch tapered roller bearing cone. Inch tapered roller bearings are ordered by cone number and cup number. Most makers use the same cone and cup numbers for the same size, but always check the cup number as well. Send us the numbers on your old bearing and we confirm the match before quoting.
Brand names are trademarks of their respective owners. FULI is not affiliated with, authorized by or endorsed by these companies. Part numbers are shown for interchange reference only. FULI dimensions, load ratings and speeds come from the FULI catalog.
663 compared with nearby cone sizes
The 663 cone has a 82.55 mm (3.250 in) bore and a cone width of 41.275 mm. FULI's catalog pairs it with cup 653 (146.05 mm outside diameter, 41.275 mm total width).
The next smaller cone on this site is 580, with a 82.55 mm bore (0 mm smaller) and cup 572.
The next larger is HM518445, with a 88.9 mm bore (6.35 mm larger) and cup HM518410.
The metric tapered bearing on this site closest in bore is 32217 (85 × 150 × 38.5 mm). Its sizes differ from the 663 pair, so the two are not interchangeable; it is given only as a size reference.
| Cone | Cup | d × D × T | Cr (kN) |
|---|---|---|---|
| 33287 | 33462 | 73.025 × 117.475 × 30.162 mm | 128 |
| 6461A | 6420 | 76.2 × 149.225 × 53.975 mm | — |
| 580 | 572 | 82.55 × 139.992 × 36.512 mm | 176.3 |
| 663 | 653 | 82.55 × 146.05 × 41.275 mm | 210.4 |
| HM518445 | HM518410 | 88.9 × 152.4 × 39.688 mm | 258.3 |
| HM218248 | HM218210 | 89.974 × 146.975 × 40 mm | 231.1 |
| 594A | 592A | 95.25 × 152.4 × 39.688 mm | 186.9 |
Sizes and Cr from FULI's catalog; — = not listed on this site.
663 load ratings
663/653 has a dynamic load rating Cr of 210.4 kN and a static rating C0r of 302.9 kN in FULI's catalog. The ratings belong to the cone and cup as a pair; a different cup changes them.
Speed limits and weights for inch cones are not listed in the catalog; ask us and we send them with the quotation.
Values from FULI's catalog; confirm for your application.
663 size in inches and millimetres
663 is made to inch sizes. The 82.55 mm bore is 3-1/4 in. The millimetre values in the catalog are conversions of the inch sizes.
| Dimension | Millimetres | Inches |
|---|---|---|
| Cone bore d | 82.55 mm | 3.2500 in |
| Cup outside diameter D (653) | 146.05 mm | 5.7500 in |
| Total width T | 41.275 mm | 1.6250 in |
| Cone width B | 41.275 mm | 1.6250 in |
| Cup width C | 31.75 mm | 1.2500 in |
Converted at 1 in = 25.4 mm and rounded to four decimals.
Mounting 663 (general guidance)
General guidance, not a FULI specification: on a turning shaft the cone is a tight fit on the shaft and the cup a lighter fit in the housing, so the cup can be moved when the bearing pair is adjusted. Inch bearing fits are given as shaft and housing limits in inches in the bearing makers' tables; follow the drawing of your machine.
Tapered roller bearings carry radial load and axial load in one direction, so 663 is normally used as one of a pair, and the end play or preload is set at mounting.
If the outer ring turns and the shaft stands still, as in an idler pulley or a wheel hub, the fits are reversed: the housing gets the interference fit (for example N7 or P7) and the shaft a sliding one (g6 or h6).
Grease for 663
FULI supplies tapered roller bearings rust-protected and normally without grease; grease is packed in when the bearing is mounted. Relubricating 663/653 from the side takes about 30.1 g each time by the formula in our grease calculator: 0.005 × D × T = 0.005 × 146.05 × 41.27.
How FULI supplies 663
663 is supplied as a cone, as a cup or as a complete cone and cup pair, as your order states. Where an order states a requirement for the total width T (41.275 mm for 663/653), each set is checked on a height gauge before packing.
Rings are marked with a brand you are authorised to use, with the FULI brand, or left neutral, as your order states. The box is printed with the model, precision class and brand.
Inquiries that give only one number are the usual cause of a wrong quote, so write both the cone and the cup number, for example 663/653.
Tools and guides for 663
Typical applications
- Vehicle wheel hubs and axles
- Gearboxes and reducers
- Agricultural machinery
- Conveyor pulleys
FAQ
What size is 663 in mm?
The 663 cone has a 82.55 mm bore (3.250 in). With cup 653 the bearing is 82.55 × 146.05 × 41.275 mm (d × D × T).
What is the difference between 663 and HM518445?
HM518445 has a 88.9 mm bore against 82.55 mm for 663, and pairs with cup HM518410 (88.9 × 152.4 × 39.688 mm) instead of 653 (82.55 × 146.05 × 41.275 mm). The two are not interchangeable; order by the numbers on the old cone and cup.
How much grease does 663/653 need?
About 30.1 g each time it is relubricated from the side (0.005 × 146.05 × 41.27). FULI ships it rust-protected without grease, so the first fill is made at mounting.
Which cup goes with the 663 cone?
FULI's catalog pairs the 663 cone with cup 653. Tell us whether you need the cone, the cup or both when you send the inquiry.
Is 663 the same size across brands?
663 is an inch tapered roller bearing cone number. Most makers use the same cone and cup numbers for the same size, but check the cup number too. Send us the numbers on your old bearing and we confirm the match.