Which tube diameters do they fit?

Motor diameter — Elero RolTop M · 50 Nm · 14 rpm: 45 mm; Elero RolTop M · 40 Nm · 14 rpm: 45 mm.

What torque and speed is each rated for?

Rated torque — Elero RolTop M · 50 Nm · 14 rpm: 50 Nm; Elero RolTop M · 40 Nm · 14 rpm: 40 Nm. Rated speed — Elero RolTop M · 50 Nm · 14 rpm: 14 rpm; Elero RolTop M · 40 Nm · 14 rpm: 14 rpm.

What protocols and control options does each support?

Limit setting — Elero RolTop M · 50 Nm · 14 rpm: Electronic; Elero RolTop M · 40 Nm · 14 rpm: Electronic.

Elero RolTop M: 50 Nm · 14 rpm vs 40 Nm

Rated torque — Elero RolTop M · 50 Nm^{[1; 2026-10-02]} · 14 rpm: 50 Nm.

Rated torque — Elero RolTop M · 40 Nm^{[1; 2026-10-02]} · 14 rpm: 40 Nm.

Last verified: 2026-10-09

When to choose Elero RolTop M · 50 Nm · 14 rpm

For the stated diameter: 45 mm^{[2; 2026-10-09]}.
For a rated torque of 50 Nm^{[1; 2026-10-02]}.
For a rated speed of 14 rpm^{[1; 2026-10-02]}.
For the stated limit type: Electronic^{[1; 2026-10-02]}.

When to choose Elero RolTop M · 40 Nm · 14 rpm

For the stated diameter: 45 mm^{[2; 2026-10-09]}.
For a rated torque of 40 Nm^{[1; 2026-10-02]}.
For a rated speed of 14 rpm^{[1; 2026-10-02]}.
For the stated limit type: Electronic^{[1; 2026-10-02]}.

Verifiable indicators

Short-time duty (S2) — Elero RolTop M · 50 Nm · 14 rpm: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published.

Rated life — Elero RolTop M · 50 Nm · 14 rpm: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published.

Thermal protection — Elero RolTop M · 50 Nm · 14 rpm: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published.

IP rating — Elero RolTop M · 50 Nm · 14 rpm: Not published. Elero RolTop M · 40 Nm · 14 rpm: Not published.

Comparison table
Property	Elero RolTop M · 50 Nm · 14 rpmElero34 261.0001	Elero RolTop M · 40 Nm · 14 rpmElero34 251.0001
Series & variant axes
Series	RolTop M	RolTop M
TorqueDiffers: 50 Nm vs 40 Nm	50 Nm	40 Nm
Rated speed	14 rpm	14 rpm
Drive performance
Rated torqueDiffers: 50 Nm^{[1; 2026-10-02]} vs 40 Nm^{[1; 2026-10-02]}	50 Nm^{[1; 2026-10-02]}	40 Nm^{[1; 2026-10-02]}
Rated speed	14 rpm^{[1; 2026-10-02]}	14 rpm^{[1; 2026-10-02]}
Dimensions & mounting
Motor diameter	45 mm^{[2; 2026-10-09]}	45 mm^{[2; 2026-10-09]}
Fits tube diameter	≥ 50 mm^{[1; 2026-10-02]}	≥ 50 mm^{[1; 2026-10-02]}
Limits & protection
Limit setting	Electronic^{[1; 2026-10-02]}	Electronic^{[1; 2026-10-02]}
Control & communication
Control interface (as stated)	Hardwired^{[1; 2026-10-02]}	Hardwired^{[1; 2026-10-02]}
Application
Applications	Roller shutter^{[1; 2026-10-02]}	Roller shutter^{[1; 2026-10-02]}
View all 8 variants
Documents	Request datasheet	Request datasheet

Same-series variants

Variant axis	Elero RolTop M · 50 Nm · 14 rpm	Elero RolTop M · 40 Nm · 14 rpm
Torque	50 Nm^{[Elero manufacturer site (product catalog); 2026-10-02]}	40 Nm^{[Elero manufacturer site (product catalog); 2026-10-02]}

Cross-brand alternatives

Wistar motor WSME50-LED-40/13: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSME50-LED-40/16: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 120 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Becker R40-17-C01 PLUS: 40 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 45 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Becker R40-17-D01: 40 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 45 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Becker R40-17-E01: 40 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 45 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Wistar motor WSME50-40/13: 40 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}

Questions and answers

Which tube diameters do they fit?: Motor diameter — Elero RolTop M · 50 Nm · 14 rpm: 45 mm; Elero RolTop M · 40 Nm · 14 rpm: 45 mm.
What torque and speed is each rated for?: Rated torque — Elero RolTop M · 50 Nm · 14 rpm: 50 Nm; Elero RolTop M · 40 Nm · 14 rpm: 40 Nm. Rated speed — Elero RolTop M · 50 Nm · 14 rpm: 14 rpm; Elero RolTop M · 40 Nm · 14 rpm: 14 rpm.
What protocols and control options does each support?: Limit setting — Elero RolTop M · 50 Nm · 14 rpm: Electronic; Elero RolTop M · 40 Nm · 14 rpm: Electronic.

Sources

↑Elero manufacturer site (product catalog)elero.comRated torque: 50 NmManufacturer-stated · Observed 2026-10-02 · Retrieved 2026-09-23 · Public web pageUsed for: 44522, 44516, 44523, 44517, 44524, 44518, 44525, 44519, 44526, 44520, 44527, 44521
↑Tubular diameter derivation tdia-elero-catalog-2026-p51-roltop-melero.com[tdia-elero-catalog-2026-p51-roltop-m] Ø 45 mm from "RolTop M". archive: vendor/elero/aero/catalog_pdf/d3db2f5a3087a18e41569789454c321eaa3e24c3927400842437f18ecca3c54a.pdf p51. elero catalogue 2026 p51, Technical data RolTop M-868 /-K / RolTop M /-K / RolTop M-868 / RolTop M high-speed version / RolTop/D+ M-868 / RolTop/D+ M / RolTop/D+ M NHK / RolTop s_onro M-868 / RolTop s_onro M / RolTop/J M-868 / RolTop/J M: "Min. shaft diameter (mm) 50 … Diameter (mm) 45"Derived (vendor document) · Observed 2026-10-09 · Retrieved 2026-10-09 · Public web pageUsed for: 54635, 54634

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Elero RolTop M · 50 Nm · 14 rpm vs Elero RolTop M · 40 Nm · 14 rpm