6921ZZ Single row deep groove ball bearings dimensions
Detailed parameters and installation dimensions:
Part Number | 6921ZZ |
Seal | ZZ = shields on both sides |
Series | 6900 metric, extra-thin section series (69..ZZ) |
Dimension Chamfer - r min | 1.1 mm | 0.0433 inch |
Radial clearance | CN |
Radial Dynamic Capacity - Cr | 46358 N | 10421 lbf |
Radial Static Capacity - C0r | 41677 N | 9368 lbf |
Bore | Cylindrical |
Units | Metric |
Speed ratings (grease) - nB | 4274 min–1 |
Equivalent | 6921-ZZ |
Load | radial |
Rows NO. | One |
Number of Balls - z | 18 |
Ball Diameter - Dw | 11.906 mm | 0.4687 inch |
Abutment Dimensions Shaft - da min | 111.5 mm | 4.3898 inch |
Abutment Dimensions Shaft - da max | 116 mm | 4.5669 inch |
Abutment Dimensions Housing - Da max | 138.5 mm | 5.4527 inch |
Cage | Pressed Steel Cages |
Temperature - T(min) | -10 °C |
Temperature - T(max) | 110 °C |
Interchangeable | NSK 6921ZZ |
Dimension Inside - d φ | 105 mm | 4.1338 inch |
Dimension Outside - D Φ | 145 mm | 5.7087 inch |
Dimension Width - B | 20 mm | 0.7874 inch |
Tolerance class | P0 (ABEC-1) |
Ball Material | GCr15SiMn |
Fillet Radius - ra max | 1 mm | 0.0394 inch |
Factor - fo | 16.5 |
Bearing Type | Deep groove ball bearings, single row, shields |
Bearing Mass - m | 0.856 kg | 1.8871 lb |
Manufacturer Part Code | 6921-ZZ |
Ring Material | GCr15SiMn |
Single row deep groove ball bearings 6921ZZ, 0.856 kg Bearing mass, (105*145*20 mm), 105 mm d (Bore: diameter of the inner ring), 145 mm D (Outside: diameter of the outer cylindrical surface of the outer ring), 20 mm B (Width: nominal width of the bearing), 46358 N radial dynamic load capacity (Dyn. Cr), 41677 N radial static load capacity (Stat. Cor), 4274 r/min Maximum RPM (Speed in grease),
- Min. Order: 1 Piece/(6921ZZ, 105 = ID, 145 = OD, 20 = B, 0.856 kg) or according to different suppliers
- Price: Different brands, different quality, different 6921ZZ prices, different suppliers and different quality determine different prices, you can ask the supplier in detail for the price according to your own needs.
- Precision Rating: DIN: P2~P0; ANSI: ABEC9~ABEC1; JIS: JIS~JIS0; ISO: CLASS2~NORMAL CLASS; GB/T30794 B~G
- Inquiry ways: The right of the inquiry form, Email, skype, Whatsapp




Specifications From Tradebearings:
Manufacturer Part Code: 6921ZZ;
Dimension Inside - id φ: 105 mm;
Dimension Outside - OD Φ: 145 mm;
Dimension Width - B: 20 mm;
Type Of Bore: Straight Bore;
Type of Seal: Two Sealed;
Number of Rows: One Rows;
Snap Ring Included: No;
Radial Internal Play: CN;
Operation Temp Rating: -40 to 120 ºC;
Dyn. Load Rating: 42500 N;
Stat. Load Rating: 42000 N;
Running Accuracy Class: ISO Class 0 (DIN P0);
Surface Coating: NO;
Material of Bearing: High Hardness Bearing Steel;
Material of Cage: Steel;
Width Of Inner Ring: 20 mm;
Width Of Outer Ring: 20 mm;
Max Reference Speed RPM (Grease): 4300 rpm;
Fillet Radius(ra): 1.1 mm;
Limiting speed Max (1/min): 5100 RPM;
Standards: MIL-G-18709A;
Bearing Series: 69;
Bearing Mass (m): 1.84 lbs;
Wafangdian AA Bearing Trade Co.,Ltd
Email: sales@spainbearing.com Tel: 86-159-06428604 2021-11-216921ZZ Radial Ball Bearing, 69 Series, Deep Groove, Cylindrical Bore, 105 mm = Bore (d), 145 mm = D, 20 mm = B, 42500 N = Load Capacity; Brand: Interchangeable From NTN 6921ZZ or OEM;
Material Of Bearing = High Hardness Bearing Steel;
Material Of Cage = Pressed Steel;
Seal Type = Two Seal Close;
Max speed = 4300 rpm Grease;
Bearing Series = 69 Series;
Operating Temperature Range = -40 to 120 °C;
Feature = Cylindrical Bore Standard Medium;
Bore Dia. (d) = 105 mm;
Outside Dia. (D) = 145 mm;
Number of Rows = 1;
Width (B) = 20 mm;
Load Rating = 42500 N