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
Availability:
29 in stock
Stainless steel torque tube ball bearing, 1-9/16 in bore x 2 in OD, 9/32 in extended inner ring, PTFE lip seals with shields both sides. NHBB B543 size.
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| MFR / Brand | NHBB |
|---|---|
| MPN | SSRI-543QQ4EE |
| Model | SSRI543QQ4EE |
| Bearing Type | Ball Bearing, PTFE lip seals with protective shields, both sides |
| ID | 1.5625 in |
| OD | 2.0000 in |
| Width | 0.2812 in (inner ring); 0.2500 in (outer ring) |
| Base Number | RI-543 |
|---|---|
| Mpn Variants | SSRI-543QQ4EE, SS RI 543 QQ 4 EE, SSRI543QQ4EE, RI-543, B543 |
| Compatible With Replaces | B543 size torque tube bearing (1.5625 x 2.0000 in) |
| Additional Attributes | Extended inner ring both sides (EE). Inner ring width 0.2812 in, outer ring width 0.2500 in. |
| Material | AISI 440C stainless steel |
| Series | Torque Tube (RI-5xx) |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Bearing Material | AISI 440C stainless steel |
| Closure Type | PTFE lip seals with protective shields, both sides |
NHBB SSRI-543QQ4EE is a stainless steel thin-section torque tube radial ball bearing with an extended inner ring, from NHBB’s Precision Division. Bore Diameter: 1.5625 in (1-9/16 in). Outside Diameter: 2.0000 in. Inner ring width: 0.2812 in. Outer ring width: 0.2500 in. PTFE lip seals with protective shields on both sides. Unit Quantity: 1 Pc. Country of origin: United States.
SS — NHBB material code, AISI 440C stainless steel.
RI-543 — NHBB inch radial torque tube size, 1-9/16 in bore by 2 in OD: the B543 torque tube envelope.
QQ4 — lip-riding PTFE seals with protective shields on both sides.
EE — inner ring extended on both sides.
Bore Diameter: 1.5625 in. Outside Diameter: 2.0000 in. Inner Ring Width: 0.2812 in. Outer Ring Width: 0.2500 in. Number of Rows: 1. Rolling Elements: ball. Bore Type: straight. Closure Type: PTFE lip seals with protective shields, both sides. Bearing Material: AISI 440C stainless steel. Series: Torque Tube (RI-5xx).
Inner ring width: 0.2812 in, extended beyond both outer ring faces. Outer ring width: 0.2500 in. Torque tube envelope: B543 size, 1.5625 x 2.0000 in.
Torque tube size: B543 (1.5625 x 2.0000 in). Written forms of this number: SSRI-543QQ4EE; SS RI 543 QQ 4 EE; SSRI543QQ4EE; RI-543; B543.
1.5625 in (1-9/16 in) bore and 2.0000 in outside diameter, with a 0.2812 in inner ring and 0.2500 in outer ring.
QQ4 is lip-riding PTFE seals with protective shields on both sides. EE is an inner ring extended on both sides.
AISI 440C stainless steel, from the SS material code.
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