BECO BHTS ZZ GR CG 350°: graphite cage
Available
The BECO BHTS ZZ GR CG 350° is a deep groove ball bearing that runs without grease. A one-piece graphite coronet cage lubricates the bearing directly for its whole life, so there is no grease to burn off and no oil dropping system to fit. It is built on standard bearing boundary dimensions from stabilised AISI 52100 chrome steel, with a manganese phosphate coating on all steel parts, 4xC5 radial internal clearance and ZZ steel shields on both sides. This range has 2 sizes, with bores of 12 to 25mm in the 6200 series.
It is for -50°C to +350°C and recommends it only for 280°C to 350°C. BECO also notes that this construction has some limits for shock load and for resistance in difficult environments.
Where this product is used
- Paint ovens
- Steel industry
- Furnaces for the ceramic industry
- Trolleys for brick kilns
Features
- Operating range of -50°C to +350°C, with a recommended application range of 280°C to 350°C
- One-piece graphite coronet cage that lubricates the bearing for life, so it works in the total absence of grease
- Stabilised AISI 52100 chrome steel with a manganese phosphate coating on all steel parts
- 4xC5 radial internal clearance
- ZZ steel shields on both sides
- Standard bearing boundary dimensions
Key specifications
| Specification | Detail |
|---|---|
| Type | Single row deep groove ball bearing |
| Series | 6200 |
| Bore diameter d | 12 to 25mm |
| Outside diameter D | 32 to 52mm |
| Width B | 10 to 15mm |
| Operating range | -50°C to +350°C |
| Economic operating range (BECO) | 250°C to 350°C |
| Recommended application range (BECO) | 280°C to 350°C |
| Radial internal clearance | 4xC5 |
| Cage | One-piece graphite coronet cage |
| Sealing | ZZ steel shields, both sides |
| Bearing material | AISI 52100 chrome steel, stabilised for the operating temperature |
| Surface treatment | Manganese phosphate coating on all steel parts |
| Lubrication | Lubricated for life by the graphite cage, no grease |
| Limiting speed | 65 to 85rpm, depending on size |
| Static load rating at 350°C | 2.14 to 5.52 kN, depending on size |
| Static load rating at 20°C | 3.1 to 8 kN, depending on size |
| Bearing weight | 37 to 130g, depending on size |
| Brand | BECO |
Available sizes
| Designation | Bore d (mm) | Outer D (mm) | Width B (mm) | Static load at 350°C (kN) | Static load at 20°C (kN) | Limiting speed (rpm) | Weight (g) |
|---|---|---|---|---|---|---|---|
| 6201 | 12 | 32 | 10 | 2.14 | 3.1 | 85 | 37 |
| 6205 | 25 | 52 | 15 | 5.52 | 8 | 65 | 130 |
Fitting and use
The graphite cage is the lubricant, so do not add grease or oil to this bearing.
Press the ring that has the interference fit onto its seat, and never push through the balls or the other ring.
The shaft and housing expand with temperature, so check the fits at operating temperature.
Choosing the right option
Select by bore, outside diameter and width first, then check the limiting speed for that size in the table against the shaft speed. Limiting speeds run from 65 to 85rpm, so it suits slow running.
The static load rating is shown at 350°C and at 20°C. Use the figure for the temperature the bearing will actually run at.
Limits for shock load and for resistance in difficult environments with the graphite cage design.
Also available from BECO: the shielded 280°C range, the open 330°C range.
| Option | Part number | SKU |
|---|---|---|
| 12 x 32 x 10 | 6201BHTS.ZZ.GR.CG.350_BECO | A0213058 |
| 25 x 52 x 15 | 6205BHTS.ZZ.GRCG.350°_BECO | A0213059 |
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12 x 32 x 10mm bearing
Model Number: 6201BHTS.ZZ.GR.CG.350_BECO
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25 x 52 x 15mm bearing
Model Number: 6205BHTS.ZZ.GRCG.350°_BECO
