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Gearmotors: What They Are and How to Size a Replacement
Many industrial loads need torque an electric motor can’t deliver on its own, at a
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Metric open linear ball bushing, 12 mm shaft, 22 mm OD, 32 mm long, 440 N dynamic load, two integral wipers. Thomson MAM12OPNWW MultiTrac series.
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| MFR / Brand | Thomson |
|---|---|
| MPN | MAM12OPNWW |
| Model | MA M12 OPN WW |
| ID | 12 mm |
| OD | 22 mm |
| Width | 32 mm |
| Material | Steel / Plastic |
|---|---|
| Type | Linear Bearing |
| Series | MultiTrac |
| Rolling Elements | Ball |
| Max Temp | 85 °C (185 °F) |
| Bearing Type | Linear Bearing |
| Item Weight | 0.04 kg (0.088 lb) |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Harmonization Code | 8482.10.50.68 |
| Mpn Variants | MAM12OPNWW, MA M12 OPN WW, MAM12-OPN-WW, MAM12OPN |
| Additional Attributes | Self-aligning; not adjustable; single; no roll pack; MM class shafting; two integral wipers |
| Dynamic Load Rating | 440 N |
| Static Load Rating | 1,100 N |
| Industry Terms | linear ball bushing; open linear bearing; ball bushing bearing; MultiTrac; linear motion bearing; slotted linear bushing |
| Common Misspellings | Thompson MAM12OPNWW; Thomson MAM12OPN-WW; Thomson MAM 12 OPN WW; Tomson MAM12OPNWW |
| Application Types | Linear motion on supported round shafting; automation equipment; packaging machinery; machine tools |
| Configuration | Open |
| Closure Type | Two integral wipers |
Thomson MAM12OPNWW is a MultiTrac metric linear ball bushing for a 12 mm round shaft. It is the open type, slotted along its length to clear the support of a continuously supported shaft, self-aligning, with two integral wipers (one at each end).
MA — Thomson metric ball bushing bearing.
M12 — 12 mm nominal shaft diameter.
OPN — open type, slotted for supported shafting.
WW — wipers on both ends.
Series: MultiTrac. Bearing Type: Linear ball bushing. Rolling Elements: Ball. Configuration: Open, self-aligning, not adjustable. Closure Type: Two integral wipers. Dynamic Load Capacity: 440 N. Static Load Capacity: 1,100 N. Maximum Temperature: 85 °C (185 °F). Weight: 0.04 kg (0.088 lb). Unit Quantity: 1 Pc.
Nominal Shaft Diameter (d): 12 mm (0.472 in). Outside Diameter (D): 22 mm (0.866 in). Length (C): 32 mm (1.260 in). Used with MM class shafting.
The closed version of the same size is the MAM12WW. The open bushing runs on a 12 mm supported shaft rail. Designation written as MAM12OPNWW, MA M12 OPN WW and MAM12-OPN-WW.
A 12 mm round shaft, including continuously supported shaft rail.
Dynamic Load Capacity: 440 N.
Open type, slotted along its length.
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