Nicotra Gebhardt RZR Alternative — LONGWELL LWBE3G EC plug fans (FanGrid)

Looking for an alternative to Nicotra Gebhardt RZR? LONGWELL does not build belt-driven airfoil scroll fans, so there is no frame-for-frame RZR mirror. What LONGWELL offers for RZR duties is the LWBE3G EC backward-curved plug fan — Ø355–630 mm, up to 23,896 m³/h and 2,524 Pa per unit, 380–400 V 3Φ, integrated EC controller — installed singly or as a FanGrid of two to six units for the RZR 710–1000 duties. Selection is by duty point; aerodynamics are characterized using AMCA 210/211 test methods; delivery 15–30 days.

Replaces: Nicotra Gebhardt RZR 355 – RZR 1000 (airfoil double-inlet) Frame / size: Ø355–1000 mm · airfoil Family: Nicotra RZR → LONGWELL LWBE3G EC plug fans (duty-point match, not a frame mirror) Sample: 1–3 days

Replacing

Nicotra Gebhardt
RZR

RZR · Backward airfoil double-inlet centrifugal

→

With

LONGWELL
LWBE3G EC plug fans (FanGrid)

EC plug fans, single or FanGrid · 15–30 day delivery

Specification Comparison

Specification	Nicotra Gebhardt RZR	LONGWELL LWBE3G EC plug fans (FanGrid)
Fan type	Backward airfoil double-inlet centrifugal	EC backward-curved plug fan (free outlet, no scroll) — single or FanGrid
Impeller / frame	Ø355–1000 mm · airfoil	Ø355–630 mm per unit; RZR 710–1000 duties as a 2–6-fan FanGrid Not frame-interchangeable
Airflow range	10,000–120,000 m³/h	up to 23,896 m³/h per unit (LWBE3G560-218NT-13); 120,000 m³/h class as a 6-fan FanGrid
Static pressure (max)	1,400–3,000 Pa	up to 2,524 Pa (Ø355) · 2,342 Pa (Ø450) · 1,677 Pa (Ø630)
Power class	motor-selectable (IE3/IE4)	up to 5,600 W per unit
Noise floor (Lw)	85 dB(A)	from 62 dB(A) (nameplate, per model)
Voltage	230 / 400 V · 380–480 V 3Φ	230 V 1Φ · 380–400 V 3Φ
Drive / motor	Belt-drive, IE3/IE4 motor (EC retrofit)	Direct-drive EC external-rotor with integrated controller, no belt EC standard
Certifications	CE · UL · EAC · AMCA	CE · RoHS · REACH · ETL on request
Sample lead time	4–10 weeks	1–3 days
Series lead time (≤500 units)	10–14 weeks	15–30 days
Landed cost index (LONGWELL = 100)	175–200	100 (baseline)

Verify it on the LONGWELL selector: LWBE3G560 — 10 models, data, curves, drawings · LWBE3G560-218NT-13 (23,896 m³/h per unit) · LWBE3G630 — largest plug-fan size · check your own duty point · samples, MOQ and lead time

Selection is by duty point, not by frame number. Send the RZR size, the operating point (m³/h at Pa) and the supply voltage; LONGWELL returns the plug-fan size and FanGrid layout with curves and dimensioned drawings.

Why Engineers Switch from RZR to LWBE3G EC plug fans (FanGrid)

4–8× Faster Delivery

15–30 days

vs 10–14 weeks ex-works for Nicotra Gebhardt in 2026. Sample units 1–3 days from stock.

40–55% Lower Landed Cost

−40 to −55%

per unit at equivalent spec. On a multi-unit AHU / fan-grid program the CapEx delta scales fast.

No Belt to Maintain

0 belts

The external-rotor motor sits inside the impeller: no belt tensioning, pulley wear or bearing-block service. EC versions add 0–10 V / PWM / Modbus RTU speed control.

Drop-in compatibility vs the RZR: what matches and what changes

Frame & dimensional match

A plug fan has no scroll: the impeller blows freely into the AHU section from a wall plate with an inlet nozzle, so the belt-driven RZR, its motor, slide rails and outlet transition are all removed. The wall plate and nozzle cut-outs are made to the LONGWELL drawings on the model pages. Where a ducted scroll outlet must be kept, a plug fan is not the right replacement — ask engineering.

Drive & motor options

LONGWELL builds direct-drive fans only: external-rotor AC motors as standard on the LWFA-E blowers (220–230 V 1Φ), EC motors on the LWDD blowers and on the LWBE3G plug fans (230 V 1Φ or 380–400 V 3Φ, 0–10 V / PWM / Modbus RTU). There is no belt-drive variant and no "-K" designation.

Performance match

RZR 355–560 duties are covered by a single LWBE3G355–LWBE3G560 unit; RZR 710–1000 duties (up to 120,000 m³/h) by a FanGrid of two to six LWBE3G560/630 units, each up to 23,896 m³/h, running part-load where EC efficiency is highest. Enter the duty point on the selector to see every model whose curve covers it.

Typical Applications

LWBE3G plug fans and FanGrid arrays are used across large AHU, stadium and process-air duty. Common application categories include:

Stadium / large-venue HVAC
Very large industrial AHU
High-efficiency process air

RZR airfoil impellers are chosen for efficiency; on the LONGWELL side the same goal is reached with backward-curved EC impellers running part-load in a FanGrid, with N+1 redundancy included.

FAQ

Is there a size-for-size LONGWELL equivalent of the Nicotra RZR?

No. LONGWELL does not make belt-driven airfoil scroll fans and does not use Nicotra frame designations. RZR duties are covered by LWBE3G EC plug fans — one unit up to Ø630 mm and 23,896 m³/h, or a FanGrid for the 710–1000 sizes. Selection is by duty point, and the wall-plate layout is confirmed against the LONGWELL drawings.

Does LONGWELL offer an EC version?

Yes. EC external-rotor motors with 0–10 V / PWM / Modbus RTU control are available across the direct-drive range, and the LWBE3G plug-fan line is EC as standard in 230 V 1Φ and 380–400 V 3Φ. There is no belt to remove — the motor sits inside the impeller hub.

What is the lead-time and cost difference?

LONGWELL LWBE3G EC plug fans (FanGrid) ship in 15–30 days vs 10–14 weeks ex-works for Nicotra RZR under allocation, and typically land 40–55% below Nicotra ex-works pricing at equivalent duty. Samples ship in 1–3 days.

What should I send to get a verified proposal?

The Nicotra model and size, the duty point (airflow at static pressure), supply voltage and frequency, the control signal you use, and a photo or drawing of the existing mounting. Engineering returns the LONGWELL model, its curve, a dimensioned drawing and the sample lead time — usually within one working day.

Can I get the full Nicotra-to-LONGWELL cross-reference?

This guide covers AT, DD/DDM, DDP, RDH, RZR and ADH. For any other Nicotra model send the nameplate to sales@longwellfans.com, or enter the duty point on the LONGWELL selection site to see every model whose curve covers it.

Replace your RZR — samples in 1–3 days

Send a quick request — model + quantity + delivery address. Sample unit ships in 1–3 days for field validation. Series production at 15–30 day lead time after PO.

Request Sample View Full Cross-Reference Table

Official Product Page

Browse the full Commercial Centrifugal Fans & Blowers range on longwellfans.com — request a quote on LWBE3G EC plug fans (FanGrid) directly.

View on longwellfans.com →

Nicotra Gebhardt® is a trademark of its owner. LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by Nicotra Gebhardt. This page is published as engineering reference based on public datasheets. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.