Product Overview
Motovario H series are inline (coaxial) helical gear reducers where input and output shafts share the same axis. Designed for maximum reliability under harsh operating conditions and applications requiring high radial loads. The series covers cast iron (sizes 030–140) and aluminium (sizes A30–A60) housings, with power up to 45 kW and torque up to 8,000 Nm. Nibora Ltd offers the H series on request – contact us for a quote.
Technical Data by Size Group
| Sizes | Housing | Stages | Max M2 (Nm) | Power P1 (kW) | Ratio i | Max Fr2 (N) |
|---|---|---|---|---|---|---|
| H030–040 | Cast iron | 1–2 | up to 250 | up to 3 | 1.23–18.7 | up to 12,000 |
| H050–060 | Cast iron | 1–2 | up to 800 | up to 11 | 1.23–48.6 | up to 22,000 |
| H080 | Cast iron | 2–3 | up to 2,000 | up to 22 | up to 101 | up to 35,000 |
| H100 | Cast iron | 2–3 | up to 4,000 | up to 37 | up to 165 | up to 45,000 |
| H125–140 | Cast iron | 2–3 | up to 8,000 | up to 45 | up to 282 | up to 55,000 |
| HA030–A60 | Aluminium | 1–2 | up to 450 | up to 7 | 1.23–48.6 | up to 10,000 |
Versions
| Code | Description (EN) |
|---|---|
| H | PAM flange for IEC motor coupling |
| IH | Gearbox only with input shaft |
| CH | Compact geared motor |
| PH | With flexible coupling |
Key Features
- Inline (coaxial) design – input and output shafts on the same axis
- Two housing materials: G200 grey cast iron (030–140) and aluminium (A30–A60)
- 1, 2 or 3 reduction stages – ratio i = 1.23 to 282.1
- Max torque 8,000 Nm, max radial load 55,000 N
- FEM-optimised cast iron housing for high strength
- Gears hardened and tempered – shaved or ground profile
- Mounting: feet, flange or universal
- ATEX certification 2GD/3GD
- Standards: ISO 6336, AGMA 2001-B88
- RAL 5010 blue epoxy-polyester coating per DIN 1843
- 2-year warranty from delivery
How to Order
H series is on request – not in stock. Specify: size, version (H/IH/CH/PH), stages, gear ratio and mounting configuration.
Tel. +359 64 681 058 | nibora@nibora.com | nibora.com
H Series Catalogue
Download PDF ↓FAQ
What is the difference between H series and B series?
H series are inline helical gearboxes with input and output shafts on the same axis. B series are helical-bevel gearboxes with a 90° angle between input and output. Choose H when shafts must be coaxial; choose B when a right-angle drive is needed.
What is the difference between cast iron H and aluminium HA?
Cast iron H series (030–140): heavy-duty, up to 8,000 Nm and 55,000 N radial force. Aluminium HA series (A30–A60): lighter and more compact, up to 450 Nm and 7 kW – suitable for lighter drives with weight limitations.
What gear ratios are available?
From i = 1.23 (near direct drive) to i = 282.1 in 3-stage configurations – making the H series exceptionally versatile for a wide range of output speeds.
Is ATEX certification available?
Yes – ATEX version 2GD/3GD, T=135°C (T4) per Directive 94/9/CE. Specify zone and substance group when ordering.
What is the delivery time?
Standard configurations: typically 5–15 working days. Special versions (ATEX, non-standard shaft): confirmed individually.