NSK Cylindrical Roller Bearings, Single-Row NU-Type, NU321W ,D=105
|Basic Load Ratings
DESIGN, TYPES, AND FEATURES
Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:
Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings.
The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars
The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.
If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables.
Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.
□Formulation of Bearing Designations
Single-Row Cylindrical Roller Bearing
|①Bearing type||NU : Single-row cylindrical roller bearings
(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information.
|②Dimension Series||10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series,|
|③Bore number||Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm)|
|④Internal design||E : High load capacity|
|⑤Cage||W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage|
|⑥Internal clearance||For All Radial Brgs.
Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special Clearance
For Non-Interchangeable Cylindrical Roller Bearings
CC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance
|⑦Tolerance class||Omitted : ISO Normal，P6 : ISO Class 6，
P5 : ISO Class 5，P4 : ISO Class 4
|⑧NSKHPSTM||& : NSKHPSTM Designation Tolerance Class : ISO Normal|
We have a 30-day return policy. Returns are limited to items purchased within 30 days and are subject to a 25% restocking fee.
Items must be unworn, unused, with tags and in original packaging to be eligible for return. A receipt or proof of purchase is also required.
To initiate a return, please contact email@example.com If your item is eligible for a return, you will be credited 75% of the original purchase price, not including any shipping costs. Please contact your sales professional to request an RMA (Return Materials Request) as only returns bearing an RMA will be received. All items must be in new saleable condition in the original packaging. Credits will be issued once the item has been received and inspected.
If you have any questions regarding returns or exchanges, please contact firstname.lastname@example.org
damage and problems
Please inspect your order upon receipt and if the item is defective or damaged, or if you have received the wrong item, please contact us immediately so that we can evaluate the problem and deal with it properly.
Unfortunately we do not accept returns on non-policy items, discount items or gift cards.
The fastest way to get the item you want is to return the item you have and purchase a new item separately once the return has been accepted.
After we receive and inspect your return, we will notify you and let you know if a refund has been approved. If approved, your original payment method will be automatically refunded. Remember, it may take a while for your bank or credit card company to process and post your refund.