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Cylindrical Bearings
Rollway NU 321 EM
CYLINDRICAL 200-300-400
NU 321 is also available as
- NU 321 EM$3,623.92
- NU 321 EM C3$1,232.12
Material
High Chromium Bearing Steel
Dynamic Load Rating (lb)
93,970
Seal Type
Unsealed
Inner Race Configuration
Separable Both Directions
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- Through hardened bearing grade steel
- Surfaces precision ground to RBEC 1 tolerances
- Crowned rollers
Dimensions
| Dim. | Meaning | mm |
|---|---|---|
| B | Overall Width | 49 |
| D | Outside Diameter | 225 |
| F | 133 | |
| d | Bore Size | 105 |
| r1s min | 3 | |
| rs min | 3 |
Values as printed for NU 321 EM. Verify critical dimensions before ordering.
- Material
- High Chromium Bearing Steel
- Seal Type
- Unsealed
- Inner Race Configuration
- Separable Both Directions
- Static Load Rating (kN)
- 469
- Dynamic Load Rating (kN)
- 417.9994
- Outer Race Configuration
- Non-Separable
- Version
- EM: Extra capacity design; Machined brass retainer
- Flanges
- (2) Flanges on Outer Ring
- Additional Information
- Suitable for radial loads only
- Cage Material
- Brass
- Overall Width (mm)
- 49
- Bore Type
- Straight
- Rolling Element
- Cylindrical Roller
- Radial Clearance
- C0
- Number of Rows
- 1
- Misalignment
- No
- Speed (Max) Grease
- 2,400
- Sealed
- None
- Dynamic Load Rating (lb)
- 93,970
- Full Complement/Caged
- Caged
- Duplexing
- No
- Platform
- Cylindrical Radial
- Bore Size - Metric
- 105Shaft size chart
- Speed (Max) Oil
- 3,000
- Static Load Rating (lb)
- 105,435
- Separable
- Inner ring - both sides
- Profile
- Complete with Outer and Inner Race
- Retainer
- Yes
- Snap Ring
- No
- Outside Diameter (mm)
- 225
- Product Line
- Cylindrical Roller Bearing — Single Row
- Fatigue Load Limit (kN)
- 49.2
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Rollway
- Mfg. Catalog Numberi
- NU 321 EM
- Mfg. Part Numberi
- NU 321 EM
- GDS #i
- GDS-121966
- Categoryi
- Cylindrical Bearings
- UPCi
- 637410081413
Documents & Support
- Rollway Bearings Catalog (Regal Rexnord, 2022) — page 82View
NU 321 options
| Part # | Configuration | Price | View |
|---|---|---|---|
| NU 321 EMThis part | Higher load rating, brass cage | $3,623.92 | |
| NU 321 EM C3 | Higher load rating, brass cage, C3 radial clearance | $1,232.12 | View |
Common Questions
Is this a genuine Rollway part?
Yes. GDS Supply supplies the genuine Rollway NU 321 EM, manufacturer article number NU 321 EM. Its UPC is 637410081413.
