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Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
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6 in stock
Super-precision angular contact ball bearing, 17 x 30 x 7 mm, ABEC 5 / P5 class, medium preload, universally ground for matched stacking. Open construction.
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$75.65
6 in stock
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| MFR / Brand | NTN |
|---|---|
| MPN | 7903T1GGMP5 |
| Model | 7903 T1 G GM P5 / 3MM9303WI CR SUM |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 17 mm |
| OD | 30 mm |
| Width | 7 mm |
| Material | Chrome Steel |
|---|---|
| Series | 7900 |
| Preload | Medium (GM) |
| Base Number | 7903 |
| Industry Terms | spindle bearing; super precision bearing; machine tool bearing; P5 angular contact bearing; ABEC 5 bearing; universally ground bearing; 79 series bearing |
| Common Misspellings | NTN 7903T1GGM P5; 7903T1GGPM5; 7903 TIG GM P5; NTN 79O3T1GGMP5; 71903 T1G GM P5 |
| Application Types | machine tool spindles; grinding and drilling spindles; high-speed rotary tables; instrument and metrology spindles; precision gearboxes |
| Bore Shaft Size | 17 mm (0.6693 in) |
| Mpn Variants | 7903T1GGMP5; 7903-T1-G-GM-P5; 7903 T1 G GM P5; 7903T1G/GMP5; 7903A SUM; 71903 |
| Precision Class | ABEC 5 / P5 |
| Precision Rating | ABEC 5 / P5 |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Part Number | 7903T1GGMP5 |
| Cross Reference 1 | Timken 3MM9303WI CR SUM (carton marking) |
|---|
NTN 7903T1GGMP5 single-row super-precision angular contact ball bearing, 17 x 30 x 7 mm, metric 79 extra-light series (ISO envelope 71903). Straight bore, open on both faces, universally ground, medium preload, ISO class 5 / ABEC 5. Unit Quantity: 1 Pc. Condition: new.
7903 — 79 extra-light series envelope on a 17 mm bore (ISO 71903).
G — universal grinding; faces are ground so bearings of the designation can be stacked in any arrangement.
GM — medium preload group.
P5 — ISO class 5 running accuracy, ABEC 5.
3MM9303WI CR SUM — carton designation in the Timken Fafnir scheme; SU is single universally ground and M is medium preload.
Bore Diameter: 17 mm (0.6693 in). Outside Diameter: 30 mm. Overall Width: 7 mm. Series: 79 extra-light series (ISO 71900). Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Straight. Seal Type: Open. Preload: Medium (GM). Precision Class: ABEC 5 / P5. Material: Chrome steel.
Bore Diameter: 17 mm. Outside Diameter: 30 mm. Width: 7 mm. Universally ground faces allow stacking in back-to-back, face-to-face or tandem arrangements.
Carton cross-reference: Timken 3MM9303WI CR SUM. Same ISO 71903 envelope: 17 x 30 x 7 mm.
Bore Diameter: 17 mm. Outside Diameter: 30 mm. Width: 7 mm. ISO envelope designation 71903.
G is universal grinding and GM is the medium preload group.
P5 is ISO class 5 running accuracy, equal to ABEC 5.
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