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Availability:
3 in stock
Super-precision angular contact ball bearing pair, 80 mm bore, 110 mm outside diameter, 16 mm width per ring. 25 degree contact angle, light preload, phenolic cage, NSK P4Y special class. Sold as a matched duplex set of 2 Pcs.
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$421.23
3 in stock
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| MFR / Brand | NSK |
|---|---|
| MPN | 7916A5TRDULP4Y |
| Model | 7916 A5 TR DUL P4Y / 71916 AC D P4 DGA |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 80 mm |
| OD | 110 mm |
| Width | 32 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7900 Series |
| Condition | New |
| Lubricant | Preserved |
| Preload | Light Preload |
| Base Number | 7916A5 |
| Industry Terms | super precision spindle bearing; machine tool bearing; matched pair angular contact; duplex bearing set; phenolic cage bearing; extra light series |
| Common Misspellings | NSK 7916A5TRDULP4V; 7916A5TRDULPAY; 7916 A5 TR DUL PY4; NKS |
| Application Types | Machine tool spindles; grinding spindles; high-speed milling heads; precision rotary tables |
| Total Width | 32 mm (1.2598 in) for the matched pair |
| Bore Shaft Size | 80 mm (3.1496 in) |
| Mpn Variants | 7916A5TRDULP4Y; 7916A5TRDUL P4Y; 7916 A5 TR DUL P4Y; 7916-A5-TR-DUL-P4Y; 71916A5TRDULP4Y |
| Distributor Stock Numbers | 7916A5TRDULP4Y |
| Arrangement Configuration | Duplex matched pair (DUL) |
| Precision Class | NSK P4Y special class (tighter bore and outside diameter than P4) |
| Min Temp | -30°C |
| Dynamic Load Rating | 45.5 kN / 10229 lbf |
| Static Load Rating | 44.5 kN / 10004 lbf |
| Precision Rating | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Max Temp | 120°C |
| Item Weight | 1.65 lbs |
| Cage Material | Phenolic resin |
| Limiting Speed | 15000 rpm |
| Number Of Rows | 1 per ring, 2 rows in the pair |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25 degrees |
| Mounting Arrangement | Matched duplex pair |
| Design Units | Metric |
| Bearing Material | Steel rings, steel balls |
| Running Accuracy | P4 |
| Part Number | 7916A5TRDULP4Y |
| Running Accuracy Radial And Axial Runout | P4 |
| Cross Reference 1 | 71916A5 (ISO angle-designated equivalent) |
|---|---|
| Cross Reference 2 | 71916 (ISO base number) |
An NSK 7916A5TRDULP4Y super-precision angular contact ball bearing set, two rings ground as a matched duplex pair. Steel rings, steel balls, phenolic cage, open on both faces.
79 — NSK 79 extra-light dimension series; bore code 16 gives an 80 mm bore. ISO equivalent 71916.
A5 — 25° contact angle in NSK’s scheme.
TR — outer-ring-guided phenolic resin cage, rated to 120°C.
DUL — duplex, light preload.
P4Y — NSK special precision class, holding tighter bore and outside-diameter tolerance than P4.
A 25° contact angle carries more thrust and less speed than a 15° ring on the same 80 x 110 x 16 mm envelope, which suits a spindle whose axial cutting load dominates. An outer-ring-guided phenolic cage is carried on the outer land rather than by the balls, which lowers cage wear and lubricant churn at speed and holds the mass down. Light preload keeps the running temperature and frictional torque low against some loss of axial stiffness. P4Y tightens the bore and outside-diameter tolerance beyond P4, so the fit into a spindle housing and onto the shaft is more repeatable across rings.
Bore: 80 mm (3.1496 in)
Outside diameter: 110 mm (4.3307 in)
Width per ring: 16 mm (0.6299 in)
Total width of the pair: 32 mm (1.2598 in)
Contact angle: 25°
Precision class: NSK P4Y special class, tighter bore and outside diameter than P4
Preload: light
Cage: phenolic resin, outer-ring guided
Cage temperature ceiling: 120°C (248°F)
Rolling elements: steel balls, single row per ring
Closure: open both faces
2 Pcs, supplied as one matched duplex pair.
ISO base number 71916, angle-designated 71916A5. Searchable forms are 7916A5TRDULP4Y, 7916A5TRDUL P4Y, 7916 A5 TR DUL P4Y and 71916A5TRDULP4Y. A 7916CTRDULP4Y ring is the 15° version of the same envelope and a 7916A is the 30° version, so both are related sizes rather than interchanges. A 7916A5TYNDULP4Y carries a polyamide cage and is likewise a related size.
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