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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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5 in stock
Single-row thin-section deep groove ball bearing, 200 x 280 x 38 mm, open, machined brass cage, C3 internal clearance. NTN 6940-M-C3, ISO 61940 size.
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| MFR / Brand | NTN |
|---|---|
| MPN | 6940-M-C3 |
| Model | 61940 M C3 142-27-11570 |
| Bearing Type | Deep Groove Ball Bearing, Open |
| ID | 200 mm |
| OD | 280 mm |
| Width | 38 mm |
| Material | High Carbon Chrome Steel |
|---|---|
| Series | 69 (thin section) / ISO 619 |
| Base Number | 6940 |
| Industry Terms | Deep groove ball bearing, thin section ball bearing, extra large ball bearing, brass cage ball bearing, C3 clearance bearing, 61940 bearing |
| Application Types | Earthmoving final drives, swing gearboxes, gear reducers, electric motors, machine tool tables, conveyor idlers |
| Bore Shaft Size | 200 mm |
| Mpn Variants | 6940 M C3, 6940MC3, 6940C3, 6940-M-C3, 61940, 61940 M C3, 61940MC3, 142-27-11570 |
| Compatible With Replaces | Komatsu 142-27-11570 |
| Closure Type | Open |
| Cage Type | Machined |
| Rolling Elements | Ball |
| Cage Material | Brass |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Internal Clearance | C3 |
| Harmonization Code | 8482.10.50 |
| Part Number | 6940-M-C3 |
| Cross Reference 1 | SKF 61940 MA/C3 - machined brass cage, C3 |
|---|---|
| Cross Reference 2 | FAG 61940-C3 - pressed steel cage |
| Cross Reference 3 | NTN 6940 - pressed steel cage, normal clearance |
| Cross Reference 4 | Komatsu 142-27-11570 (OEM number) |
NTN 6940-M-C3 is a single-row deep groove ball bearing in the thin-section 69 series (ISO 61940 size). Unit Quantity: 1 Pc. It is a complete bearing: inner ring, outer ring, one row of balls and a machined brass cage. Bore Diameter: 200 mm. Outside Diameter: 280 mm. Overall Width: 38 mm. Bore Type: Straight. Closure Type: Open. Rolling Elements: Ball. Number Of Rows: 1. Cage Material: Brass. Cage Type: Machined. Internal Clearance: C3.
6940 — 69 thin-section series, bore code 40 (40 x 5 = 200 mm), ISO equivalent 61940.
M — machined brass cage, in place of the pressed steel cage on the standard 6940.
C3 — radial internal clearance greater than normal.
Bore Diameter: 200 mm. Outside Diameter: 280 mm. Overall Width: 38 mm. Series: 69 (thin section) / ISO 619. Cage Material: Brass. Cage Type: Machined. Internal Clearance: C3. Closure Type: Open. Contact type: radial contact, no contact angle.
Straight bore, 200 mm. Cross-section: (280 – 200) / 2 = 40 mm against a 38 mm width, the near-square section of the thin-section series.
OEM number: Komatsu 142-27-11570. Same 200 x 280 x 38 mm envelope: SKF 61940 MA/C3 (machined brass cage, C3); FAG 61940-C3 (pressed steel cage); NTN 6940 (pressed steel cage, normal clearance).
Bore Diameter: 200 mm. Outside Diameter: 280 mm. Overall Width: 38 mm.
M is a machined brass cage. C3 is radial internal clearance greater than normal.
Komatsu 142-27-11570. The ISO size designation is 61940.
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Our team can locate, cross-reference, and source all parts.
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