NM 50 لچکدار جبڑے کپلنگ
NM 50 reference model with 7-19 mm bore range, 12500 rpm maximum reference speed, and forged-iron hub construction shown in the supplied reference page. Final bore, keyway and duty require confirmation.
NM 50 is the smallest reference frame in the supplied series. Its compact 50 mm outside diameter and 7-19 mm listed bore window make shaft engagement and remaining hub wall the first checks when a custom bore is requested. The table gives 1.3 Kg*m normal torque, 2.3 Kg*m maximum torque and 12,500 rpm maximum reference speed.
- Listed bore window 7-19 mm
- Compact OD 50 mm
- Normal reference torque 1.3 Kg*m
- Source page identifies forged-iron hubs
- Bore/keyway drawing required before release
Compact Frame Decision
Use this row as a compact-model identification aid. The numbers keep the source units so a buyer can compare an existing sheet without conversion; the released drawing remains the dimensional authority.
| Model | Normal Torque (Kg*m) | Max Torque (Kg*m) | Max RPM | Bore Min (mm) | Bore Max (mm) | Boss D (mm) | Outside OD (mm) | Distance L (mm) | Space S (mm) | Approx. Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| NM 50 | 1.3 | 2.3 | 12500 | 7 | 19 | 33 | 50 | 25 | 2.0±0.5 | 0.48 |
How NM 50 Works
For a compact NM 50 enquiry, start by identifying the two hub bores rather than assuming both sides are identical. The supplied illustration shows forged-iron hubs separated by a flexible element. That element is a replaceable interface in the jaw arrangement, but its exact compound is not specified by the provided table. Temperature, oil exposure and operating cycle therefore belong in the RFQ instead of being guessed from the model code.
Bore And Duty Checks
The buyer decision for NM 50 is normally a packaging-versus-bore check. A small outside diameter can be attractive where the guard envelope is tight, yet the coupling still needs enough hub section after the bore and keyway are machined. Provide motor power and speed or actual transmitted torque, both shaft dimensions, key sizes and any shoulder that controls axial location. Confirm the final geometry by drawing before release.
Fitting The Small Frame
Installation review should focus on clean shaft seats, correct key engagement and accurate hub position. Do not drive a hub onto an oversized fit to compensate for a machining mismatch. After both hubs are positioned, verify the specified gap and shaft alignment, then inspect the flexible element for pinching or uneven seating. A compact coupling can hide alignment errors if the guard leaves little viewing space, so record the setup before the guard is closed.
Where To Evaluate It
NM 50 can be screened for compact motor-to-machine connections only after the duty data is known. Small pumps, instruments, compact automation drives or other equipment may have modest steady torque but still create difficult starts or high speed. Treat the machine name as context, not the sizing method. The reference speed value must also be checked against the final bore, balance expectation and actual coupling configuration.
Machining Options
Customization requests for this frame should prioritize bore size, keyway detail, fit class and shaft engagement length. Marking and finish can be discussed after those geometric items are safe. If a special element or hub material is required, state the reason and environmental condition so the proposal is evaluated as a project configuration rather than described as a standard NM 50 feature.
Order Preparation
For an NM 50 quote, send quantity together with the two shaft drawings or clear dimensioned sketches. Samples of 1-5 pcs can be evaluated at sample pricing. Very small 1-2 pcs requirements may carry higher unit cost because setup and bore machining are not eliminated by low quantity.
Frequently Asked Questions
Why does the NM 50 bore need an early drawing check?
The hub is compact and the listed bore window is 7-19 mm. Keyway depth, shaft fit and engagement length can affect the remaining hub section, so the approved machining sketch matters.
Can the 12,500 rpm figure be used as the normal target?
No. It is the maximum reference speed shown in the supplied table. Use the real operating speed and review the finished configuration before approving a high-speed application.
What should a compact-drive RFQ include?
Send both shaft interfaces, available guard space, motor data, starting behavior and quantity. A photo with a scale or an existing drawing is useful for replacement work.
What is not defined by the NM 50 table?
The technical sheet does not state the exact flexible-element compound or project-specific bore tolerances. Those items must be confirmed for the intended environment and order drawing.
Request NM 50 Review
Please include both shaft dimensions, motor power and speed or torque, quantity and application.
