Authorized NTN Distributor
For gearbox repair leads, reliability engineers and technical buyers. Send one overhaul list and get one written quote that holds every position to its original NTN execution.
Shaft position map
A clear NTN gearbox enquiry names the shaft, then the locating or non-locating end, then the full designation. NTN Bearing Supplier can then quote each position at its original execution, across your whole reducer.
L Locating end NL Non-locating end Schematic view. Follow the layout on your own drawing.
The drive side of the reducer. List both ends, even when only one bearing has failed.
Input shaft / locating end / full NTN designation with suffix / quantity
Carries gear mesh on both sides. Number each stage if your reducer has more than one.
Intermediate shaft, stage no. / non-locating end / full NTN designation with suffix / quantity
The driven side, where a failure often stops the line. Flag the required date on these lines.
Output shaft / locating end / paired arrangement / full NTN designation with suffix / sets
Every bearing maps to the input, intermediate or output shaft.
Duty conditions and any departure from original spec stay open to review.
Exact designations, set quantities and separately stated substitutes are easy to check.
Paired bearings
Bearings with an arrangement requirement belong together on the quote. Several shaft positions and paired sets can go on one coordinated parts list, so your rebuild is priced the way it will be assembled.
| Split into single parts | Enquired as an arrangement |
|---|---|
| Separate lines with no link between them | Lines grouped by shaft position and arrangement |
| Locating and non-locating ends left undefined | Each end named on the list |
| Quantities counted part by part | Quantities confirmed as complete sets |
| Arrangement rebuilt from memory at assembly | Arrangement tied to your overhaul part drawing |
| Alternatives mixed in with the original lines | Substitutes stated on their own line |
What we value is that they do not just quote a part number. They asked about the load direction, speed and lubrication arrangement before confirming the NTN reference. On one order, they flagged a bearing that was borderline for our duty and suggested a heavier series. That saved us from a repeat failure.
Original specification
Selection starts from the original equipment specification. That keeps suffix, clearance and cage details intact, and it keeps every technical decision with you.
Workshop records often show one base number with several suffixes. We resolve the difference before you accept a quote.
Suffix. The full designation is confirmed, not just the base number.
Clearance. Matched to what your work order calls out.
Cage. Checked with the same care as the size.
Your reliability engineer sees every departure from the original spec. Nothing is swapped quietly on the way to an order.
Substitutes on their own line. Clearly separated from the original designation.
Buyer approval. Any technical change goes to you for sign-off.
Written quote. Model, quantity, price, availability and estimated lead time, in writing.
NTN product families
Cylindrical, tapered and spherical roller bearings sit alongside NTN ball, thrust and needle families, so one list can cover the complete reducer.
112products online
View NTN bearing productsFeatured products
These NTN bearings suit gearbox rebuilds, reducer assembly and heavy machinery transmission. Add any of them to your overhaul list.
Deep Groove Ball Bearings
Clutch Release Bearings
Deep Groove Ball Bearings
Deep Groove Ball Bearings
Deep Groove Ball Bearings
Deep Groove Ball Bearings
Deep Groove Ball Bearings
Send it with your list. If a designation is incomplete, add a clear photo of the bearing marking.
Applications
NTN Bearing Supplier supplies NTN bearings for gearbox repair and assembly, heavy machinery transmission, and equipment users in steel, mining and wind service.
Industrial gearboxes and speed reducers use different bearing types at the input, intermediate and output shafts, with radial, axial and combined loads shifting from…
Drivetrains in construction machinery, cranes and hoists, marine equipment and agricultural machines run under heavy loads, frequent starts and stops, and shock. Heavy shafts…
Maintenance teams replace bearings across motors, fans, machine tool spindles, and textile, printing and packaging machines, often working from worn markings or incomplete shop…
Gearbox rebuild shops replace complete bearing sets during overhauls, and those jobs often depend on work orders with mixed suffixes or no clear shaft-position…
Gearbox assembly lines need several bearing types for each unit, delivered in the correct execution and quantity to keep production moving. Mixed suffixes or…
Steel plant gearboxes and heavy drives work under high loads, shock, elevated temperatures and scale contamination. An unexpected bearing failure on a critical gearbox…
Customer reviews
5.0
"Our heavy-duty gearbox rebuild shop depends on NTN cylindrical and spherical roller bearings. This supplier consistently matches the clearance and cage spec we call out on our work orders, and the bearings run true after installation. Our customers have noticed fewer warranty returns."
5.0
"We are a repair workshop in Toronto. Lead time on NTN bearings used to be 4-6 weeks through local channels. Sourcing here cut that to under two weeks, and the price is better. It has changed how we schedule our overhaul jobs."
4.9
"We had a large industrial gearbox fail at our steel plant. We needed NTN tapered roller bearings for the output shaft urgently. They shipped the same day, and the bearings were on our floor within a week. The gearbox is back in service and the vibration levels are normal."
5.0
"The NTN bearings we ordered for a wind turbine gearbox replacement had to meet a specific precision class. The supplier confirmed the execution, supplied the measurement report, and the installation passed our inspection. We will use them for the next turbine service."
4.9
"Bulk pricing on a container of NTN roller bearings for our gearbox assembly line was competitive. Every box had the correct quantity and the NTN packaging was intact. Our receiving team logged the shipment in without discrepancies."
FAQ
A good bearing enquiry identifies the position, the execution and the arrangement. These answers cover what repair leads and technical buyers ask most.
A complete list includes the reducer model, shaft position, NTN suffix, paired arrangement and overhaul part drawing. Add the quantity of each item, the destination country and postcode, and your required date. If a designation is incomplete, attach a clear photo of the marking and say what still needs confirming.
Identify paired bearings as one set, not as separate parts. State the shaft position, the arrangement and the number of sets, and attach the overhaul part drawing where you have it. The quote can then treat them as the complete assembly they are.
Send every version you have on record, along with a photo of the marking if possible. The exact execution is confirmed before you accept a quote. Clearance and cage details are settled at that stage, not after delivery.
Yes, when you are open to one, and it is stated separately from the original designation. The specified NTN execution stays on the enquiry throughout. Any technical change needs your approval.
The written quote states product model, quantity, price and currency, and availability. It also gives the estimated lead time, quote validity and applicable shipping or tax terms. Product documents are confirmed at the same stage.
Articles
Read practical guidance on NTN bearing selection and reducer overhaul work, written for the people who specify and buy the parts.
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Send your overhaul list
NTN Bearing Supplier, based in Schaumburg, Illinois, supplies NTN gearbox and reducer bearings to customers worldwide. Include these points for a written quote.
