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Central Surplus Bearing Finder
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3 in stock
Matched duplex pair of super-precision angular contact spindle bearings, 25 mm bore x 47 mm OD x 12 mm wide per bearing, universally ground with medium preload. Sold as 2 Pcs.
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$147.69
3 in stock
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| MFR / Brand | Barden |
|---|---|
| GTIN | 69715022592 |
| Model | 105H EDUM |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 25 mm |
| OD | 47 mm |
| Width | 12 mm |
| Material | High Carbon Chrome Steel |
|---|---|
| Series | 100 Series |
| Lubricant | Oil |
| Base Number | 105H |
| Industry Terms | spindle bearing pair, super precision angular contact, duplex set, ABEC 7 bearing, machine tool bearing, universally ground bearing |
| Common Misspellings | Barden 105HE DUM, Bardon 105HEDUM, Barden 1O5HEDUM, 105HEDUN, Barden 105-HE-DUM |
| Application Types | Machine tool spindles, grinding spindles, precision index heads, instrument drives |
| Bore Shaft Size | 25 mm (0.9843 in) |
| Mpn Variants | 105HEDUM, 105-HEDUM, 105 HEDUM, 105HDUM, 105H, 105HEUM |
| Manufacturer Status | Barden is part of Schaeffler |
| Rolling Elements | Ball |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Part Number | 105HEDUM |
A Barden 105HEDUM matched duplex pair of super-precision angular contact spindle bearings. Each bearing has a 25 mm bore, a 47 mm outside diameter and a 12 mm width, giving a 24 mm stack height for the pair. The 105 size shares the 7005 envelope.
105: Barden 100 series, 25 mm bore, 47 mm OD, 12 mm width. H: Barden high-precision spindle execution, ABEC 7. DUM: duplex universally ground, medium preload.
Universal grinding is what makes the pair work: the ring faces are finished so any two bearings of this designation clamp together into a matched set and reach the designed preload when the rings are pulled flush, with no shimming. Medium preload gives higher axial and radial stiffness than a light set, so the spindle holds position better under cutting load, and it generates more heat, which sets the practical speed ceiling. ABEC 7 running accuracy keeps radial and axial runout low enough that the preload stays even around the circumference.
Bore: 25 mm (0.9843 in). Outside diameter: 47 mm (1.8504 in). Width per bearing: 12 mm (0.4724 in). Total width as a pair: 24 mm (0.9449 in). Precision class: ABEC 7. Preload: medium (M). Number of rows: 1 per bearing. Rolling elements: steel balls. Closure: open. Arrangement: duplex universally ground pair.
Supplied as 2 Pcs, a matched duplex pair.
Orientation sets the behaviour: back-to-back or face-to-face carries thrust in both directions and resists tilting, while tandem carries thrust in one direction at doubled capacity.
Matching bearings are ABEC 7 universally ground medium-preload pairs in the same 25x47x12 mm envelope and with the same contact angle: Barden 105H series pairs, and 7005-series super-precision duplex sets from Fafnir, FAG, NSK and RHP in matching angle and preload. Light or heavy preload versions of the same size are different bearings, because they change spindle stiffness and running temperature.
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