3201 Double row angular contact ball Bearing 12×32mm
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3201 Double row angular contact ball Bearing 12×32mm
For a 12 mm shaft duty that needs two rows of angular contact support inside a 32 mm outside-diameter envelope, the 3201 double row angular contact ball bearing is usually a more compact, ready-to-fit choice than pairing two single-row angular contact bearings or moving to a wider housing. Its 12×32mm boundary and 15.9 mm width define the first procurement check: confirm that the envelope, load rating and capped PA66 cage match the duty, not just that the bore size is listed.
At a glance
- Model: 3201 A-2ZTN9/GFF, a capped double row angular contact ball bearing.
- Boundary: 12×32mm with 15.9 mm width and 0.059 kg nominal weight.
- Load data: 9952 N radial dynamic (Cr) and 5163 N radial static (Cor).
- Cage/fit: TN9 glass fibre reinforced PA66 cage, ball centred; cylindrical bore.
- Best use: compact pump, fan, gearbox and small-motor positions where a two-row, capped bearing saves axial space.
What specifications should buyers verify before ordering?
A quotation for this product should carry the full designation, because the suffix is part of the bill of materials. The A-2ZTN9/GFF code identifies the capped execution and the TN9 cage; accepting a generic “double row angular contact bearing” without that suffix can change sealing, grease retention and cage behaviour. Use the bearing number reference to decode suffixes before releasing a purchase order, and compare the quoted data with the table below. If the quotation omits the cage grade or cap type, ask for a revised offer rather than assuming the catalogue default.
| Parameter | Value |
|---|---|
| Designation | 3201 A-2ZTN9/GFF |
| Boundary dimensions (d×D×B) | 12 × 32 × 15.9 mm |
| Weight | 0.059 kg |
| Cage | TN9 glass fibre reinforced PA66, ball centred |
| Bearing type | Capped double row angular contact ball bearings |
| Bore | Cylindrical bore |
| Basic dynamic load rating, radial (Cr) | 9952 N |
| Basic static load rating, radial (Cor) | 5163 N |
| Reference speed | 23939 r/min |
| Limiting speed | 21826 r/min |
Two ratings deserve particular attention. The Cr value of 9952 N and Cor value of 5163 N are radial figures; they should not be read as permissible thrust ratings without an application review. Speed is also not a single number to copy from a catalogue. The reference speed of 23939 r/min and limiting speed of 21826 r/min must be matched to lubrication, cap drag, preload and heat rise in the actual assembly. A bearing that is acceptable in a lightly loaded fan may be unsuitable in a gearbox with continuous axial load. If the buyer needs a higher thrust capacity in the same space, compare alternatives within the Double row angular contact ball bearings category before changing the housing drawing.
How should fit, tolerance and cage choice be checked?
Fit verification starts with the shaft and housing drawing, not with a generic rule. For a 12 mm cylindrical bore, confirm the specified shaft fit, housing fit and axial location method; then ask the supplier to state the bore and outside-diameter tolerance class on the inspection report. Because this is a capped bearing, tolerance also affects cap clearance and seal integrity—a tight housing bore can distort the outer ring and increase drag if the cap is not seated correctly. Buyers should request a dimensional report for the batch, not only a catalogue page. A first-article inspection should include bore, outside diameter, width, cap condition and rotating torque.
The TN9 cage is glass fibre reinforced PA66 and ball centred. That is a practical choice for many small and medium-speed duties, but it is not a universal substitute for a brass or steel cage in high-temperature or high-vibration service. Procurement should confirm that the quotation states TN9, not merely “polymer cage,” and that the operating temperature and lubricant are compatible with PA66. If the application has frequent shock loads, discuss cage options with the engineering contact before placing the order. Also confirm that the cage is ball centred as stated, because cage guidance affects lubricant flow and noise in small bearings.
Mounting practice matters as much as the tolerance class. Do not press on the outer ring or caps when fitting to the shaft, and do not apply heat above the lubricant or cage limits. Verify that the housing shoulder and shaft shoulder provide the axial support shown on the drawing, and check that the caps are not damaged during handling. A small 12×32mm bearing can be installed with a suitable sleeve and controlled force; improvised hammer fitting is a common cause of premature noise and raceway damage. After installation, check free rotation and listen for cap rub before the machine is run under load.
What lead-time and order details should procurement confirm?
Lead time should be quoted against the exact suffix, quantity and packaging requirement. A supplier may hold a generic 3200-series bearing but still need to confirm the A-2ZTN9/GFF capped version, cage batch and inspection documents. Ask for the promised ship date in writing, especially if the line is planning a first article approval or a maintenance shutdown. For repeat orders, request lot traceability and a certificate of conformity so that incoming inspection can compare the dimensions and ratings with the approved sample. If the bearing is for a critical repair, ask whether the stock is factory-packed or has been repacked.
Before release, check the commercial details that affect total cost: minimum order quantity, unit weight for freight, cap protection in transit, and whether the supplier can preserve the original pack quantity. The 0.059 kg nominal weight is useful for freight estimates but should not replace an actual packed weight. If the bearing will sit in stores for months, confirm the rust-preventive treatment and shelf-life guidance. For urgent maintenance, ask whether the supplier can ship the exact capped bearing from stock and what documentation will accompany the shipment. Confirm also that the invoice description matches the approved designation, so receiving inspection does not accept an uncapped or different-cage substitute.
Request a quote from FIJ Bearing for the 3201 A-2ZTN9/GFF and include your shaft/housing fits, operating speed, load direction and required delivery date.