SKF 33011/QDF03C170 tapered roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Decoding SKF 33011/QDF03C170
- 330Series
- Tapered roller bearings, 330 series. Series differ in outside diameter and width even when the bore is the same.
- 11Bore
- Bore 55 mm (11 × 5).
- QDF03C170Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
33011 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 33011/QDF03C170 measures 55 mm across the bore and 90 mm across the outside diameter; its total width is 27 mm (55 x 90 x 27 mm).
SKF 33011/QDF03C170 belongs to tapered roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 33011/QDF03C170 and any equivalents.
SKF tapered roller bearings handle combined radial and axial loads in industrial machinery, power transmission, and rotating systems. Their roller and raceway geometry distributes forces efficiently when shafts see loads in two directions. MR supplies these bearings to maintenance and purchasing teams across the United States, Canada, Mexico, and South America, helping you confirm the right part number for your application.
A bearing designation like 33011/QDF03C170 packs series, size, and variant information into one code. The numeric prefix 33011 identifies the series and bore size, while the suffix after the slash indicates the execution. To decode any reference, read the full sequence: base number, slash, and trailing characters. If you have a code you cannot interpret, send it through WhatsApp or email and our team will clarify it and quote the bearing.
Typical installations include gear reducers, drive shafts, conveyor rollers, and material handling equipment. These bearings suit applications where shafts receive simultaneous radial and axial forces, such as processing machinery and lifting systems. They are found in sectors like metallurgy, food processing, cement, and mining, where combined loads are common.
Selection depends on load magnitude and direction, rotational speed, and operating environment. During installation, precise alignment and proper fit prevent additional stress. Lubrication must match the operating temperature and speed, and seals should keep out contaminants. Follow the manufacturer's mounting and commissioning guidelines, and inspect components periodically to catch wear early.
Replacement often involves equivalent codes from different manufacturers. Main dimensions and load ratings are typically standardized, allowing interchangeability. If you have a code from another brand, share it with us and we will suggest the corresponding SKF reference. If you only have the original part, we can help identify the bearing from its markings or dimensions.
Dimensions
55 x 90 x 27 mm (d x D x T): boundary dimensions for basic designation 33011, according to ISO 355.
- Bore
- 55mm
- Outside diameter (D)
- 90mm
- Total width (T)
- 27mm
Same size, other brands
Other brands' pages with basic designation 33011: 55 x 90 x 27 mm (d x D x T) per ISO 355.
What they share are the ISO 355 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- SKF 33011/QDF03C170 bearing: what are its dimensions?
- SKF 33011/QDF03C170 measures 55 mm across the bore and 90 mm across the outside diameter; its total width is 27 mm (55 x 90 x 27 mm). Those are the boundary dimensions standardized in ISO 355 for basic designation 33011.
- What loads do SKF tapered roller bearings support?
- They support combined radial and axial loads. The roller and raceway geometry distributes forces in both directions, making them suitable for applications with simultaneous loads. Exact capacity depends on the designation; send the part number and we will confirm.
- How do I find an SKF equivalent if I have a code from another brand?
- Send the code from the other brand via WhatsApp or email. Standardized dimensions often allow interchangeability, and we will provide the corresponding SKF reference. If you have the original part without identification, we can also help identify it.
- What should I check when mounting a tapered roller bearing?
- Ensure precise alignment and correct fit to avoid extra loads. Use lubrication suited to the operating speed and temperature, and install seals that protect against contaminants. Follow the manufacturer's recommendations for mounting and commissioning.