31311 SKF

[tab name='Specification']
Part Number: 31311

Brand: SKF

Bearing Type: Single Row Tapered Roller Bearing

Dimension(s):
Inside Diameter (d) = 55mm
Outside Diameter (D) = 120mm
Combined Width (T) = 31.5mm
Width (B) = 29mm
Cup Width (C) = 21mm

Load Rating(s):
Basic Dynamic Load Rating (kN) = 129.9
Basic Static Load Rating (kN) = 158

Speed Limitation(s):
Limiting Speed - Grease Lubrication (min-1) = 2800
Limiting Speed - Oil Lubrication (min-1) = 3800

Alternative Part Number(s): 30311D, 4T-30311D
[tab name='More Information']
Metric tapered roller bearings are a type of precision-engineered rolling element bearing designed to handle both radial and axial loads. These bearings are widely used in various industrial applications, automotive systems, and heavy machinery due to their exceptional durability, high load-carrying capacity, and smooth operation.

The design of metric tapered roller bearings features inner and outer raceways with tapered surfaces, which allows for the rollers to accommodate radial and axial forces simultaneously. The tapered shape ensures that the load is distributed evenly along the rollers, reducing stress concentrations and promoting extended service life.

One of the key advantages of metric tapered roller bearings is their ability to handle axial loads in a single direction, making them suitable for applications where axial displacement is expected. They are often used in pairs, with the inner and outer rings having slightly different angles, to balance the axial load distribution more effectively.

These bearings are manufactured with precision and tight tolerances to ensure smooth rotation, reduced friction, and improved efficiency. The superior materials used in their construction, such as high-quality steel, contribute to their robustness and resistance to wear and tear.

Metric tapered roller bearings are available in various designs and sizes to accommodate different application requirements. They are identified by standardised dimensions, making it easier for engineers and manufacturers to select the appropriate bearing for their specific needs.

In summary, metric tapered roller bearings are reliable, high-performance components widely used in a broad range of industries to support axial and radial loads, making them an essential part of many mechanical systems and equipment. Their ability to withstand heavy loads and maintain smooth operation under demanding conditions makes them a preferred choice for various critical applications.
[tab name='Shipping']
United Kingdom

Providing your required item is in-stock at one of our UK branches, your goods will be shipped on the same day if ordered before 16:00 (BST).

Most of our items are held in-stock at one of our UK based branches, however some items or larger quantities may be subject to a longer preparation or delivery time. If this extended delivery time applies to your product, we will notify you as soon as possible. You will then have the opportunity to request a full refund if your order is no longer required.

Orders exceeding £100 value will qualify for free shipping (UK Mainland Only).



International

Providing your required item is in-stock at one of our UK branches, your goods will be shipped on the same day if ordered before 13:00 (BST).

Most of our items are held in-stock at one of our UK based branches, however some items or larger quantities may be subject to a longer preparation or delivery time. If this extended delivery time applies to your product, we will notify you as soon as possible. You will then have the opportunity to request a full refund if your order is no longer required.

Shipping costs are calculated at checkout - just add your required items to the basket and fill in your delivery details to view the price for your shipment.

We currently export bearings, power transmission and linear motion products to over 100 countries worldwide, offering express shipments for deliveries in as little as 3 days.
[tab name='Returns']
Returns are accepted within a 14-day period, and goods will only be accepted if the following criteria is met:


• Goods are still in the original, undamaged packaging
• The item has not been used, fitted or modified
• You have notified us no later than 14 days since receipt of goods

Any products or quantities that have been sourced specifically to complete your order will be exempt from our standard returns policy, and will be subject to handling charges. The rate of the handling charge is dependent on our suppliers’ current rates.

Products that are ordered in error can also be returned, however the incurred costs for shipping will not be refunded.

Once inspection of goods has been carried out, refunds will be made to the credit / debit card or PayPal account that was used to make the initial purchase.

If any more information is required, please feel free to call or email our customer support team, and we’d be happy to assist.