Nanotec SCA5618 NEMA 23 Stepper Motors Review: Specs, Price and Applications
Updated: 4 days ago
SCA5618 is a 56 mm / NEMA 23 stepper family with several lengths, windings and shaft options. The current manufacturer page specifies holding torque up to 2.3 Nm. That correct unit matters: the older source listing’s Ncm wording is inconsistent with the manufacturer data and should not be used for sizing.
Quick Verdict
Consider SCA5618 when the selected stack and winding meet the real torque/speed duty within the available mounting envelope. Match the shaft and drive as carefully as the holding torque; two NEMA 23 motors are not automatically interchangeable assemblies.
Nanotec SCA5618 NEMA 23 Stepper Motors at a Glance
Specification | Details |
Frame | 56 mm / NEMA 23 |
Holding torque | Up to 2.3 Nm per manufacturer page; not 2.3 Ncm |
Step angle | 1.8 degrees in the original family description |
Configuration | Three lengths and two winding choices described |
Shaft options | 8 mm D-shaft or 6.35 mm round shaft in source scope; confirm actual order code |
Feedback | Applicable optical / magnetic encoder configurations |
Gearbox option | Compatible GP56 planetary configurations require exact selection |
Price | Request a quote for winding, stack, shaft and feedback/gearbox scope |
Design and Engineering Assessment
Nm and Ncm differ by a factor of 100. Resolving the source-unit error prevents a large sizing mistake, but the corrected holding torque still does not establish running torque at the process speed. Use the exact motor/drive curve.
Improved magnetic geometry can increase torque without a corresponding increase in rotor inertia for the cited comparison. That does not make every older motor mechanically or electrically replaceable by SCA5618. Check shaft, winding and connected drive settings.
A gearbox can trade output speed for torque within its efficiency, mechanical and duty limits. It introduces backlash, support and inertia considerations. Do not multiply maximum holding torque by any selected ratio and call it a guaranteed continuous output.
Choose Winding and Shaft Together
Select the winding using the supply, controller and required speed range. Confirm shaft diameter and shape with the actual coupling; matching mounting holes alone does not establish compatibility.
Include feedback mounting and rear clearance where an encoder is required. Resolution and controller compatibility must be specified separately from the motor frame.
Retrofit and Acceptance
For a retrofit, capture the existing winding/current settings and operating curve before substitution. A motor with higher holding torque can still perform differently at speed.
Validate direction, loaded motion, heating and settling through representative cycles. If a gearbox is added, measure the useful output motion and reversal behavior at the process point.
Applications and Selection
Configured NEMA 23 industrial positioning axes and careful retrofit selection.
For Nanotec SCA5618 NEMA 23 Stepper Motors, define the actual machine duty before selecting an ordering configuration. Include the required operating point, available installation space, environment and control interfaces. The specification table describes the product or family; the surrounding machine determines which of those features matters for the intended job.
Price and Value
Price: Request a quote for the exact configuration. Compare the product, compatible control equipment, required mechanical parts, cabling and commissioning as one installed system. A component price alone does not represent the cost of a working automation axis.
Evaluate an alternative against the same duty and acceptance criteria. Match the continuous operating requirement first, then compare transient capability, feedback, mechanical fit and support. This avoids choosing between superficially similar products whose ratings describe different operating conditions.
Pros and Cons
Advantages
Several winding and shaft configurations
Documented holding torque up to 2.3 Nm
Feedback and matching gearbox choices
Limitations
Source-unit error requires correction
Holding torque is not running duty
Mechanical compatibility extends beyond NEMA frame
Who Should Consider Nanotec SCA5618 NEMA 23 Stepper Motors?
Consider Nanotec SCA5618 NEMA 23 Stepper Motors for configured NEMA 23 industrial positioning axes and careful retrofit selection. Establish the required operating point and installation interfaces before choosing the configuration, and use a representative loaded cycle as the acceptance basis.
Nanotec SCA5618 NEMA 23 Stepper Motors FAQ
Is the maximum 2.3 Ncm?
No. Nanotec specifies up to 2.3 Nm holding torque for the family.
Does that torque apply at all speeds?
No. Use the actual winding/drive operating curve.
Do mounting holes establish replacement fit?
No. Check shaft, length, winding, connections and options.
Are 8 mm and 6.35 mm shafts interchangeable?
Not without a correctly matched coupling and mechanical assessment.
Does an encoder establish complete-axis accuracy?
No. Load-side mechanics and control behavior still matter.
Can torque simply be multiplied by gearbox ratio?
Only within the actual gearbox efficiency, strength and permitted duty; do not assume a universal output rating.
What should be recorded before a retrofit?
Existing motor/drive identity, winding/current settings, mechanics and required operating duty.
What proves the selected configuration?
Loaded warm-cycle and process-point measurements using the actual drive and mechanism.
Prices are indicative and may change. Confirm the final configuration, commercial terms and delivery schedule before ordering.
