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Availability:
2 in stock
Single-row angular contact ball bearing, 75 x 130 x 25 mm, open, phenolic separator, duplex tandem set, light preload, ABEC-7. Sold as 2 Pcs.
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$401.44
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| MFR / Brand | NDH |
|---|---|
| MPN | Q20215DTL7A |
| Model | Q20215 DT L 7 A / 7215-C / 2MM215 |
| Bearing Type | Angular Contact Ball Bearing |
| Width | 25 mm |
| Condition | New |
|---|---|
| Preload | Light (L) |
| Base Number | 20215 |
| Industry Terms | duplex tandem pair, matched set angular contact, spindle bearing, phenolic cage bearing, universally ground bearing |
| Common Misspellings | Q20215DTL7A, Q20215 DTL 7A, NDH Q-20215-DT-L-7-A, New Departure Q20215DTL7A, Departure 20215 |
| Application Types | Machine tool spindles, precision gearbox thrust positions, pump and compressor thrust ends |
| Total Width | 50 mm (1.9685 in) for the tandem pair |
| Bore Shaft Size | 75 mm (2.9528 in) |
| Mpn Variants | Q20215DTL7A, Q-20215-DT-L7-A, Q 20215 DTL 7A, Q20215DTL7, 20215DTL7A, 20215 |
| Manufacturer Status | Obsolete. New Departure Hyatt was a General Motors division; the bearing line passed through Delphi and this designation is no longer produced. |
| Arrangement Configuration | Duplex tandem (DT), universally ground for DT / DB / DF |
| Precision Class | ABEC-7 |
| Additional Attributes | Rust-preventive slush per the A suffix |
| Cage Material | Phenolic |
| Number Of Rows | 1 per bearing |
| Design Units | Metric |
| Part Number | Q20215DTL7A |
| Cross Reference 1 | ISO 7215 (same 75x130x25 mm envelope) |
|---|
New Departure Hyatt Q20215DTL7A single-row angular contact ball bearing, 75 mm bore, 130 mm outside diameter, 25 mm width. Open on both faces, phenolic ball separator, faces flush ground for duplex tandem mounting.
Q – nonmetallic (phenolic) ball separator
20215 – New Departure 20200 angular contact series; bore code 15 = 75 mm; ISO 7215 dimensional envelope
DT – duplex tandem set, all faces flush ground to preload requirement for universal mounting in tandem, back-to-back or face-to-face
L – light preload
7 – ABEC-7 tolerance class
A – rust-preventive slush
Light preload is the lowest of the three NDH duplex classes — L light, X medium, T heavy — and it buys speed and low heat rather than maximum stiffness. Tandem rows take thrust in the same direction and share it, roughly doubling one-direction axial capacity over a single bearing. ABEC-7 is the precision grade used for machine tool spindle positions, tightening bore, outside diameter, width and ring runout well past commercial ABEC-1.
Bore: 75 mm (2.9528 in)
Outside diameter: 130 mm (5.1181 in)
Width, each bearing: 25 mm (0.9843 in)
Rows: 1 per bearing
Rolling element: ball
Closure: open
Precision class: ABEC-7
Preload: light (L)
Separator: phenolic
Arrangement: duplex tandem, universally ground
2 Pcs, one matched tandem set of single-row bearings. A DT designation is a matched set, not a double-row bearing.
Match marks on the ring faces are aligned as ground when the set is stacked. Shaft and housing seats are held to the tolerance grade of the bearing, and clamp load passes through the ring faces rather than the separator. Preload comes from the flush-ground faces once the rings are clamped solid.
The 75 x 130 x 25 mm envelope matches the ISO 7215 series. New Departure Hyatt was a General Motors division and the line later passed through Delphi, so this designation is obsolete and is searched alongside its ISO number. A same-envelope bearing built to a different contact angle, preload class or tolerance grade — including the medium-preload ABEC-5 Q20215DTX5A — is a related size rather than an interchange.
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