Authorized SKF Distributor Ball, roller, needle, thrust and mounted bearings for industrial buyers worldwide
Buying for several machines? Add this model to one inquiry with the other SKF bearings, housings and accessories on your list. Each line keeps its own designation, quantity and specification.
Send Your Full ListThe table below lists the designation, category and recorded dimensions for SKF 3984/3920 Tapered Roller Bearing 66.68x112.71x30.16mm for Heavy Duty Machinery. Confirm these values against your equipment record before ordering.
| Category | Tapered Roller Bearing |
|---|
| Parameter | Details |
|---|---|
| Model Number | 3984/3920 |
| Bearing Type | Tapered Roller Bearing |
| Dimensions | 66.68x112.71x30.16 mm |
| Cage Material | Iron Cage/Brass Cage/Nylon Cage |
| Precision Rating | P0, P6, P5, P4, P2 |
| Seal Type | ZZ, 2RS, Open |
| Lubrication | Grease or Oil |
| Load Direction | Radial Bearing |
| Structure | Single Row, Taper |
| Separated | Separated |
| Rolling Body | Roller Bearings |
| Aligning | Non-Aligning Bearing |
| Vibration Level | Z1V1, Z2V2, Z3V3 |
| Origin | Sweden |
| HS Code | 8482200000 |
| Industry | Typical Applications |
|---|---|
| Heavy Machinery | Construction equipment, mining machinery, steel mill processing lines |
| Industrial Manufacturing | Conveyor systems, heavy-duty gearboxes, press machinery |
When heavy machinery operates under extreme loads, the wrong bearing choice leads to frequent downtime and increased maintenance costs. Many buyers struggle with mismatched dimensions causing installation failures or premature wear from substandard materials. Finding a reliable source for specific tapered roller bearings like the SKF 3984/3920 often means navigating multiple suppliers with inconsistent lead times.
The SKF 3984/3920 tapered roller bearing addresses these challenges with its robust design and precise specifications. As a specialized supplier with access to a comprehensive range of bearing brands, we ensure this 66.68x112.71x30.16mm bearing meets original equipment standards for heavy machinery. Its separated structure allows for easy mounting and dismounting, a critical feature in maintenance-intensive environments like mining and construction sites.
This bearing excels in applications with combined radial and axial loads, typical in heavy-duty gearboxes and conveyor systems. Operating temperatures compatible with both grease and oil lubrication make it versatile for varying industrial environments. The non-aligning design ensures stability under high torque, while precision ratings from P0 to P2 accommodate applications requiring tight dimensional tolerances, such as steel mill rolling equipment.
The cage material options—iron, brass, or nylon—provide flexibility for different operating conditions: iron cages offer high strength for shock-loaded applications, brass enhances heat dissipation in high-temperature environments, and nylon reduces noise in precision machinery. The Z1V1 to Z3V3 vibration levels allow selection based on equipment sensitivity, with higher grades minimizing operational noise in precision manufacturing. The bearing's 30.16mm width balances load capacity and space constraints, making it suitable for compact heavy-duty assemblies where installation space is limited.
Choosing the correct tapered roller bearing directly impacts long-term operational costs. A bearing with improper precision class or material can fail prematurely, leading to unplanned downtime and potential damage to adjacent components. The SKF 3984/3920's adherence to international dimensional standards ensures interchangeability with existing setups, reducing inventory costs. By selecting the appropriate cage material and lubrication type upfront, maintenance teams can extend service intervals, lowering overall maintenance expenses for heavy machinery fleets.
Our procurement process follows ISO 9001 standards, with each bearing undergoing dimensional and hardness testing before shipment. We provide complete traceability documentation, including batch inspection reports, to confirm compliance with original specifications. All products are sourced through established channels, ensuring authenticity and consistent performance. With a large dedicated inventory, we support same-day shipping for in-stock items, minimizing equipment downtime during replacement.
Whether you need a single replacement or bulk order for heavy machinery, we provide competitive pricing and reliable delivery. Simply share your required quantity and destination, and our team will confirm stock availability and shipping timelines. For technical assistance in verifying compatibility with your equipment, include your application details—our engineers can help ensure the SKF 3984/3920 meets your operational requirements.
Q: Do you supply other bearing brands or models besides SKF?
A: Yes, we offer a full range of international brands including NSK, NTN, Koyo, NACHI, IKO, FAG, and Timken, as well as domestic quality brands. We can source specific models based on your requirements.
Q: How can I confirm if the SKF 3984/3920 fits my equipment?
A: Provide your equipment model or existing bearing dimensions (bore, outer diameter, width), and our technical team will cross-verify compatibility with the SKF 3984/3920 specifications.
Q: What is your warranty policy for this bearing?
A: We offer a warranty against manufacturing defects. Specific terms are detailed in the sales contract, with coverage typically ranging from 6 to 12 months depending on application.
Q: What is the minimum order quantity for the SKF 3984/3920?
A: We accept small orders starting from one unit, making it easy to source replacement parts without excess inventory.
Q: How long does shipping take to [my country]?
A: In-stock items ship within 24 hours. Delivery times vary by destination: 3-5 days for express courier, 7-10 days for air freight, and 30-45 days for sea freight.
Q: Can you provide custom packaging or labeling for this bearing?
A: Yes, we offer customized packaging and label printing services to meet specific customer or regulatory requirements.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we'll get back to you with pricing and lead time.
Electrical Equipment is an Authorized SKF Distributor that turns mixed equipment lists into itemised, comparable quotes and consolidated supply for industrial plants, maintenance contractors and distributors worldwide.
Ball, roller, needle, thrust, mounted and precision bearings handled in a single industrial order.
One inquiry covers parts for different machines, with designations and internal stock codes matched line by line.
Routine replacement bearings and special-specification models are labelled separately on your quote.
Identification gaps are closed before quoting; any alternative is listed separately for your approval.
These SKF models share the category of SKF 3984/3920 Tapered Roller Bearing 66.68x112.71x30.16mm for Heavy Duty Machinery and can be quoted on the same inquiry.
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04 SKF 3984/3920 Tapered Roller Bearing 66.68x112.71x30.16mm for Heavy Duty Machinery is specified in the applications below. Open an application to see the matching SKF bearing categories.
Industrial buyers in the USA, Mexico, Oman, France, New Zealand and Brazil source genuine SKF bearings and mixed lists through Electrical Equipment.
"When a critical piece of rotating equipment failed, we needed a mixed SKF list urgently. The supplier consolidated the order, shipped same-day, and the parts were on our plant floor in two days. The equipment was back online before the end of the shift."
Ahmed Al-FarsiFarsi Industrial Services · Oman "We had a bad experience with counterfeit SKF bearings from another supplier. The bearings from skfus.com are genuine, traceable, and the packaging matches SKF's current format. Our reliability team verified the first batch and we now use them as our primary source."
Luis HernandezHernandez Manufacturing · Mexico "The SKF mounted units and insert bearings we ordered for a conveyor upgrade were supplied with the correct housing and locking arrangement. Our maintenance team installed them without modification. No noise, no leaks, no call-backs."
Graham McLeodMcLeod Fabrication · New Zealand These guides cover selection, identification and replacement points relevant to SKF 3984/3920 Tapered Roller Bearing 66.68x112.71x30.16mm for Heavy Duty Machinery.
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Read the guideShort answers on identification, mixed orders, quote terms and substitutions at Electrical Equipment.
Send a clear photo of the bearing markings and note which details still need confirming. We close identification gaps, including the exact specification and complete assembly, before you accept a quote. Nothing is substituted to fill a gap.
Yes. Standard, precision and mounted units can sit in one itemised inquiry, with each line keeping its own designation, quantity and specification. Housings and mounting accessories are added when they are part of your supply scope.
Each quote lists the designation, quantity, price and currency, stock availability, estimated lead time and quote validity. Applicable freight or tax terms are stated, and the product documents available for your order are confirmed.
Only with your approval. Any alternative is marked separately on the quote, and every technical change needs sign-off from the buyer before an order is placed.
Send this model alone or with your full SKF list. We verify the identification details on every line first, then issue an itemised written quote with lead time and validity.
