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| Parameter | SKF7028 BGM140 × 210 × 33 mm | FAG7028-XL-MP140 × 210 × 33 mm | NSK7028A140 × 210 × 33 mm | KOYO7028 FY140 × 210 × 33 mm |
|---|---|---|---|---|
| Comparable specifications | ||||
| Brand | SKF | FAG | NSK | KOYO |
| Designation | 7028 BGM | 7028-XL-MP | 7028A | 7028 FY |
| Product family | Angular contact ball bearings | — | Angular contact ball bearing | Single-row / With machined cage |
| Detailed type | Single row angular contact ball bearing | Angular contact ball bearings | Angular contact ball bearings | Angular contact ball bearings |
| Series | — | 7028 | — | — |
| Bore diameterd | 140 mm | 140 mm | 140 mm | 140 mm |
| Outside diameterD | 210 mm | 210 mm | 210 mm | 210 mm |
| WidthB | 33 mm | 33 mm | 33 mm | 33 mm |
| Basic dynamic load ratingC | 114 kN | 130 kN | 132 kN | 150 kN |
| Basic static load ratingC0 | 129 kN | 144 kN | 133 kN | 133 kN |
| Fatigue load limitPu | 4.15 kN | 7.5 kN | — | 5.3 kN |
| Reference speednref | 3400 r/min | 3250 r/min | — | — |
| Limiting speednG | 3400 r/min | 5200 r/min | — | 3300 r/min |
| Mass≈m | 3.64 kg | 4.3 kg | 3.9 kg | 3.64 kg |
| Precision class | Normal | PN — Normal (ISO 492:2023) | — | — |
| Sealing | Without | Without — Not sealed | — | — |
| Cage | Machined brass | MP — Solid brass cage, ball guided | Machined brass, inner-ring guided | — |
| Bearing material | Bearing steel | — | — | — |
| Lubricant | None | Without — Bearing not greased | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — | — |
| Maximum operating temperatureTmax | — | 150 °C | — | — |
| Boundary dimensions | ||||
| Individual bearing widthB | — | — | 33 mm | — |
| Minimum bearing chamferr min. | — | — | 2 mm | — |
| Minimum secondary bearing chamferr1 min. | — | — | 1 mm | — |
| Capabilities & suitability | ||||
| Radial load capacity | — | Yes | — | — |
| Axial load capacity in one direction | — | Yes | — | — |
| Suitable for grease lubrication | — | Yes | — | — |
| Suitable for oil lubrication | — | Yes | — | — |
| Unsealed design | — | Yes | — | — |
| Classification | ||||
| Official Category Path | — | — | — | Angular contact ball bearings - Single-row - With machined cage |
| Official Classification 1 | — | — | — | Angular contact ball bearings / Single-row / With machined cage |
| Construction | ||||
| Nominal contact angleα | — | — | 30 ° | — |
| Standard cage code | — | — | M usually omitted | — |
| Optional cage codes — ratings require separate confirmation | — | — | T | — |
| Catalogue matching scope | — | — | DB, DF, DT | — |
| Cage material and construction | — | — | Machined brass, inner-ring guided | — |
| Construction / arrangement | — | — | Single-row angular contact bearing | — |
| Dimensions | ||||
| Contact angle | 40.0 ° | — | — | — |
| Minimum chamfer dimensionrmin | — | 2 mm | — | — |
| Minimum chamfer dimensionrmin | — | 0.079 in | — | — |
| Minimum chamfer dimensionr1 min | — | 1 mm | — | — |
| Minimum chamfer dimensionr1 min | — | 0.039 in | — | — |
| Shoulder diameter on outer ring wide side faceD1 | — | 184.62 mm | — | — |
| Shoulder diameter on outer ring wide side faceD1 | — | 7.269 in | — | — |
| Shoulder diameter on inner ring wide side faced1 | — | 166.82 mm | — | — |
| Shoulder diameter on inner ring wide side faced1 | — | 6.568 in | — | — |
| Distance between the apexes of the pressure conesa | — | 67 mm | — | — |
| Distance between the apexes of the pressure conesa | — | 2.638 in | — | — |
| Contact angleα | — | 30 ° | — | — |
| Engineering — Abutment dimensions | ||||
| Diameter of shaft abutmentd a | min. 150 mm | — | — | — |
| Abutment diameter housingD a | max. 200 mm | — | — | — |
| Diameter of housing abutmentD b | max. 204 mm | — | — | — |
| Radius of filletr a | max. 2 mm | — | — | — |
| Radius of filletr b | max. 1 mm | — | — | — |
| Engineering — Calculation data | ||||
| Minimum axial load factorA | 0.26 | — | — | — |
| Minimum radial load factork r | 0.08 | — | — | — |
| Limiting valuee | 1.1 | — | — | — |
| Engineering — Calculation data — Bearing pair arranged back-to-back or face-to-face | ||||
| Calculation factor (back-to-back, face-to-face)X | 0.57 | — | — | — |
| Calculation factor (back-to-back, face-to-face)Y 0 | 0.52 | — | — | — |
| Calculation factor (back-to-back, face-to-face)Y 1 | 0.55 | — | — | — |
| Calculation factor (back-to-back, face-to-face)Y 2 | 0.93 | — | — | — |
| Engineering — Calculation data — Single bearing or bearing pair arranged in tandem | ||||
| Calculation factor (single, tandem)X | 0.35 | — | — | — |
| Calculation factor (single, tandem)Y 0 | 0.26 | — | — | — |
| Calculation factor (single, tandem)Y 2 | 0.57 | — | — | — |
| Engineering — Dimensions | ||||
| Deviation limits of mid-range bore diametert Δdmp | -0.025 to 0 mm | — | — | — |
| Deviation limits of mid-range outside diametert ΔDmp | -0.03 to 0 mm | — | — | — |
| Deviation limits of ring widtht ΔBs | -0.25 to 0 mm | — | — | — |
| Shoulder diameter of inner ring (large side face)d 1 | ≈ 167.4 mm | — | — | — |
| Shoulder diameter of inner ring (small side face)d 2 | ≈ 154.95 mm | — | — | — |
| Shoulder diameter of outer ring (large side face)D 1 | ≈ 184.35 mm | — | — | — |
| Distance side face to pressure pointa | 90 mm | — | — | — |
| Chamfer dimensionr 1,2 | min. 2 mm | — | — | — |
| Chamfer dimensionr 3,4 | min. 1 mm | — | — | — |
| ISO tolerance class for dimensions | Normal | — | — | — |
| Engineering — Tolerances of run-out | ||||
| Range of section height at inner ring of assembled bearingt Kia | 30 µm | — | — | — |
| Range of section height at outer ring of assembled bearingt Kea | 50 µm | — | — | — |
| ISO tolerance class for geometrical tolerances | Normal | — | — | — |
| Load ratings | ||||
| Basic dynamic radial load ratingCr | — | — | 132000 N | — |
| Basic static radial load ratingC0r | — | — | 133000 N | — |
| Load-centre geometry | ||||
| Single-bearing effective load centrea | — | — | 67 mm | — |
| Logistics | ||||
| Product net weight | 3.64 kg | — | — | — |
| eClass code | 23-05-08-03 | — | — | — |
| UNSPSC code | 31171531 | — | — | — |
| Lubrication-qualified speed | ||||
| Limiting speed — grease | — | — | 3200 r/min | — |
| Limiting speed — oil | — | — | 4300 r/min | — |
| Main Dimensions & Performance Data | ||||
| Basic dynamic load rating, radialCr | — | 130,000 N | — | — |
| Basic dynamic load rating, radialCr | — | 29,226.619 lbf | — | — |
| Basic static load rating, radialC0r | — | 144,000 N | — | — |
| Basic static load rating, radialC0r | — | 32,374.101 lbf | — | — |
| Fatigue load limit, radialCur | — | 7,500 N | — | — |
| Fatigue load limit, radialCur | — | 1,686.151 lbf | — | — |
| Manufacturer Identity | ||||
| Schaeffler Product Code | — | 1794489 | — | — |
| Official Class Key | — | — | — | 020-010-000 |
| Base Type | — | 7028 | — | — |
| Product Line Id | — | 14 | — | — |
| X Life Marking | — | XL | — | — |
| Base product | — | 2305080301 | — | — |
| Bearing X designation | — | 7028-XL-MP | — | — |
| Mounting Manager ID | — | 7028-XL-MP | — | — |
| Grease application ID | — | 7028-XL-MP | — | — |
| Mass reference | ||||
| Approximate mass | — | — | 3.9 kg | — |
| Mounting dimensions | ||||
| Minimum diameter of shaft shoulderda min | — | 148.8 mm | — | — |
| Minimum diameter of shaft shoulderda min | — | 5.858 in | — | — |
| Maximum diameter of housing shoulderDa max | — | 201.2 mm | — | — |
| Maximum diameter of housing shoulderDa max | — | 7.921 in | — | — |
| Maximum diameter of housing shoulderDb max | — | 205.4 mm | — | — |
| Maximum diameter of housing shoulderDb max | — | 8.087 in | — | — |
| Maximum fillet radius of shaftra max | — | 2 mm | — | — |
| Maximum fillet radius of shaftra max | — | 0.079 in | — | — |
| Maximum fillet radius of housingra1 max | — | 1 mm | — | — |
| Maximum fillet radius of housingra1 max | — | 0.039 in | — | — |
| Mounting dimensions — shown arrangement | ||||
| Minimum shaft shoulder diameterda min. | — | — | 150 mm | — |
| Maximum housing shoulder diameterDa max. | — | — | 200 mm | — |
| Maximum adjacent fillet radiusra max. | — | — | 2 mm | — |
| Product characteristics | ||||
| Type of SealWithout | — | Not sealed | — | — |
| Tolerance classPN | — | Normal (ISO 492:2023) | — | — |
| Dimensional / heat stabilizationS0 | — | Rings dimensional stabilized up to 150° | — | — |
| Product identity | ||||
| Official product category | Angular contact ball bearings | — | — | — |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/angular-contact-ball-bearings/single-row-angular-contact-ball-bearings | — | — | — |
| Structure group ID | BA1_001_101 | — | — | — |
| Available from SKF | Yes | — | — | — |
| Remanufacturable | No | — | — | — |
| Product Identity | ||||
| Construction | — | Angular contact ball bearing 70..-XL-MP, single row, X-life, solid brass cage | — | — |
| Short Description | — | Angular contact ball bearing | — | — |
| Properties | ||||
| Contact type | Normal contact (two-point contact) | — | — | — |
| Number of rows | 1 | — | — | — |
| Locating feature, bearing outer ring | Without | — | — | — |
| Ring type | One-piece inner and outer rings | — | — | — |
| Matched arrangement | No | — | — | — |
| Universal matching bearing | Yes | — | — | — |
| Axial internal clearance | Not applicable | — | — | — |
| Tolerance class | Normal | — | — | — |
| Material, bearing | Bearing steel | — | — | — |
| Coating | Without | — | — | — |
| Relubrication feature | Without | — | — | — |
| Indicative carbon footprint for new product | 13.5 kg CO 2 e | — | — | — |
| Technical Data | ||||
| d | — | — | — | 210 mm |
| B | — | — | — | 33 mm |
| R(Min.) | — | — | — | 2 mm |
| Bore Diameter (D) | — | 140 mm | — | — |
| R1(Min.) | — | — | — | 1 mm |
| Outside Diameter (D) | — | 210 mm | — | — |
| Basic Load Ratings : Cr | — | — | — | 150 kN |
| Width (B) | — | 33 mm | — | — |
| Basic Load Ratings : C0R | — | — | — | 133 kN |
| Basic Dynamic Load Rating, Radial (Cr) | — | 130,000 N | — | — |
| Fatigue Load Limit : Cu | — | — | — | 5.30 kN |
| Basic Static Load Rating, Radial (C0R) | — | 144,000 N | — | — |
| Operating Temperature Min. (Tmin) | — | -30 °C | — | — |
| Limiting Speeds(Grease Lub.) | — | — | — | 3300 min-1 |
| Limiting Speed (Ng) | — | 5,200 1/min | — | — |
| Limiting Speeds(Oil Lub.) | — | — | — | 4100 min-1 |
| Operating Temperature Max. (Tmax) | — | 150 °C | — | — |
| Load Center Spread : A | — | — | — | 67.0 mm |
| Reference Speed (Nϑr) | — | 3,250 1/min | — | — |
| Da(Min.) | — | — | — | 150 mm |
| Maximum Diameter Of Housing Shoulder (Db Max) | — | 205.4 mm | — | — |
| Da(Max.) | — | — | — | 200 mm |
| Fatigue Load Limit, Radial (Cur) | — | 7,500 N | — | — |
| Ra(Max.) | — | — | — | 2 mm |
| Minimum Diameter Shaft Shoulder (Da Min) | — | 148.8 mm | — | — |
| Mass(Refer.) | — | — | — | 3.64 kg |
| Shoulder Diameter Inner Ring (D1) | — | 166.82 mm | — | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 201.2 mm | — | — |
| Minimum Chamfer Dimension (Rmin) | — | 2 mm | — | — |
| Maximum Fillet Radius (Ra Max) | — | 2 mm | — | — |
| Maximum Recess Radius (Ra1 Max) | — | 1 mm | — | — |
| Shoulder Diameter Outer Ring (D1) | — | 184.62 mm | — | — |
| Minimum Chamfer Dimension (R1 Min) | — | 1 mm | — | — |
| Contact Angle (Α) | — | 30 ° | — | — |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 67 mm | — | — |
| Temperature range | ||||
| Operating temperature min.Tmin | — | -30 °C | — | — |
| Operating temperature min.Tmin | — | -22 °F | — | — |
| Operating temperature max.Tmax | — | 150 °C | — | — |
| Operating temperature max.Tmax | — | 302 °F | — | — |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.