The Timken 34300/34478 is a single-row tapered roller bearing, designed to handle heavy combined loads with superior durability. This premium bearing consists of the inner cone assembly (34300) and the outer cup (34478), forming a complete matched set.
Trusted across industries, Timken tapered roller bearings deliver reliable performance in applications where both radial and axial loads must be supported simultaneously.
Key Features
Matched Cone & Cup Set – Includes cone 68450 and cup 68712, ready for installation.
High Load Capacity – Tapered design distributes load evenly, reducing stress and wear.
Durability & Reliability – Made from high-grade steel for long service life, even under harsh conditions.
Precision Engineering – Manufactured to Timken’s world-class quality standards.
Service Flexibility – Designed for adjustable clearance or preload to suit your application.
Technical Specifications
Bore (d): 76.2 mm (3 in)
Outer Diameter (D): 121.442 mm (4.7812 in)
Overall Width (T): 24.608 mm (0.9688 in)
Cone Width (B): 23.012 mm (0.9060 in)
Cup Width (C): 17.463 mm (0.6875 in)
Weight: 0.9542 kg
Applications
Heavy-duty trucks and trailers
Agricultural and construction machinery
Industrial gearboxes and transmissions
Mining and power generation equipment
Why Choose Bearing King?
Genuine Timken bearings – no substitutes
Expert product knowledge and technical support
Fast UK and worldwide delivery
Competitive prices with trusted customer service
Spend over £50 (excl VAT) and your Shipping is FREE. UK Mainland Only.
We offer a range of shipping options to suit you.
Royal Mail Standard Shipping
£2.00 - Our cheapest shipping method for parcels up to 500g. Parcels are sent using the Royal Mail standard shipping service and usually take 2-5 working days to arrive. This service isn’t tracked at any stage until point of delivery.
Royal Mail Tracked 48
£4.00 - Parcels up to 2kg. Their aim is to deliver in 2-3 working days. You will receive an email from Royal Mail with full tracking details.
Next Working Day – UK Mainland Only
£8.50 – Orders placed before 4pm will be received the next working day, Monday to Friday. You will receive an email from the courier with full tracking details. We tend to use UPS, DPD or Royal Mail Next Day.
Northern Ireland 2 Day Service
£15.00 – This is a two day service to Northern Ireland. You will receive an email from the courier with full tracking details. We tend to use UPS, DPD or Royal Mail.
Northern Ireland Next Day Service
£35.00 - This is a next day service to Northern Ireland. You will receive an email with full tracking details. We tend to use UPS, DPD or Royal Mail Next Day.
Next Working Day AM – Pre 12 UK Mainland Only
£20.00 - Orders placed before 4pm will be received the next working day before Midday. You will receive an email from the courier with full tracking details. We tend to use UPS, DPD or Royal Mail.
Next Working Day AM – Pre 10.30 UK Mainland Only
£25.00 - Orders placed before 4pm will be received the next working day before 10.30am. You will receive an email from the courier with full tracking details.
Scottish Islands 2-3 Day Service
£25.00 - This is a two to three day service. You will receive an email from the courier with full tracking details.
Scottish Highlands 2-3 Day service
£35.00 - This is a two to three day service. You will receive an email from the courier with full tracking details.
SAME DAY TAXI – Please call 01709 527269 for a quote and we will try to accommodate where possible.
Click and Collect
FREE - We offer a Click & Collect service for customers that are able to collect from our premises at Bearing King. Unit 5, Northfield Business Park, Parkgate, Rotherham S60 1SD United Kingdom.
Please note, you will be notified by email when your order is available for collection.
Shipping Internationally – Europe and Rest of the World
We offer a range of options for shipping around the world. These choices will be displayed dependent on your shipping location once the item is in your basket and you are ready to Checkout.
Returns Policy
1. You may return an unused item in new condition unless faulty within 30 days of receipt. Damaged or used goods cannot be refunded.
2. A copy of our returns form must be included with the returned goods.
3. Customers will be responsible for the original and return shipping charges unless our customer service department determines that we are at fault for an order error or product defect. Bearing King will not be responsible for any return item lost in transit.
4. Once we receive the package and the goods are checked, we will refund you by the payment method used when the order was placed.
5. Please allow 3-5 days for your return to be processed or exchange to be sent.
