INA needle roller bearings, cam followers and track rollers · checked against part numbers and drawings
Get the INA component details right before you order. These answers come from Guided Motion Company, a Hong Kong-based specialist INA component supplier, and cover how we identify parts, check inner rings and washers, quote, ship and handle receipt.
Most INA orders that fail to fit come down to three things: a missing inner ring, a cam follower with the wrong stud thread or profile, or a part number that could not be read. Start here.
Often, yes. Many INA needle roller bearings run directly on a hardened shaft. If your machine design calls for an inner ring, it has to be specified as its own part number. We check this against your model or drawing before quoting.
Read the inner ring answer →Send the INA model if you have it, plus the roller outside diameter, stud thread and outer ring profile. A correct roller diameter alone is not enough; thread and profile mismatches are the usual reason a replacement will not fit.
See the cam follower checklist →Send clear photos of any remaining markings with the main outside dimensions and, where available, the assembly drawing. We use these to narrow down the INA product series, then confirm the exact specification with you before quoting.
How worn-marking identification works →Each answer starts with the short version. Questions are grouped in the order a typical inquiry runs: identify the part, check the mating components, get a written quote, then ship and verify on receipt.
The INA part number is the fastest route; add the outside dimensions and any mating components. A complete inquiry includes:
Usually, yes, if you send enough to measure against. Send clear photos of any remaining marks, the main dimensions and the assembly drawing if you have one. We use these to narrow down the INA product series and confirm the exact specification with you. We do not quote until it is confirmed.
We focus on INA parts for compact bearing arrangements and guided motion:
Yes. We check parts against the original part number, the dimensions and your assembly drawing. That way the mounting space, mating surfaces and any required inner rings or washers are part of the check, and you are not working from the bearing alone.
Send the roller diameter, stud thread and outer ring profile, plus the INA model if it is legible.
| Detail | Why it matters |
|---|---|
| Roller diameter | Sets contact with the cam or track |
| Stud thread | Must match the tapped hole or nut in the machine |
| Outer ring profile | Determines how the roller runs on the track surface |
| Photos of markings | Helps confirm the series when the model is incomplete |
The stud thread or outer ring profile was probably different. Two cam followers with the same roller diameter can differ in both. We confirm all three details before quoting, so the replacement fits the existing mounting and track.
Yes, we supply both. Stud-type cam followers are for cam and track applications. Yoke-type track rollers are supplied to the size and outer ring profile you need. Tell us which type your design uses, and send the mounting details.
If your machine design uses an inner ring, yes, it is usually a separate part number. Machined-ring needle roller bearings and their inner rings are specified individually. Leaving out the inner ring is a common reason a needle roller assembly will not fit when it arrives. Send the design reference and we will include the inner ring when we check your request.
Often they do. Axial needle roller bearings work with matching washers, and those washer part numbers are easily left off a purchase list. Send the thrust assembly reference and we will check that the washers are included.
Yes. Inner rings and thrust washers can go on the same quotation as the bearings, so the assembly arrives as a complete set. Each item is listed with its own part number and quantity.
Mid-page check
Not sure your list is complete?
Send the part numbers or the drawing. We check bearings, inner rings and washers together before quoting.
Send Your Model ListEvery written quotation lists the commercial terms in full, so you can check it against your requirement line by line. It includes:
Because a quote for the wrong part wastes time on both sides. Before you accept a quotation, we confirm the exact specification, check that the assembly is complete, and ask whether you would accept a substitute that is clearly marked as one.
Check the specification, quantity, delivery details, payment arrangement and commercial terms on the quotation. Once all five are agreed, place the order against the quotation.
After you order, we agree the shipping method, the dispatch schedule and the shipping documents you need. Your destination country and postcode from the inquiry are used to work out shipping and tax terms on the quote.
Check three things against your order: product labels, quantity and appearance. For multi-part assemblies, also make sure the inner rings and washers on the order are in the shipment.
Contact us with your order number and photos of the labels, parts and packaging. The order number lets us trace the shipment, and the photos show exactly what is different, whether that is the label, quantity or appearance. Send them by WhatsApp at +852 5913 9345 or email info@inaoem.com.
Never without your approval. A substitute is only offered if you say you would accept one, and it is listed as a separate line on the quotation. Any technical change must be approved by you, the buyer, first.
Any substitute appears on its own line, so it is never mixed in with the original part number. Before quoting, we ask whether substitutes are acceptable. If they are not, we quote only the specified part.
The buyer does. Changes to dimensions, thread, profile or mating components go ahead only with your approval. That keeps your design engineer in control of what goes into the machine.
The quickest way to get an answer is a clear photo of the part or its markings, the INA model if you have it, and your quantity. We reply with what we can confirm and what we still need.
Tell us the model, dimensions and mating parts. We confirm the specification first, then send a written quotation.