Motovario B143 Bevel Helical Gearbox – 65mm Hollow Bore, Cast Iron, Ratios 10.84:1–187.24:1

The Motovario B143 bevel helical gearbox is a high-efficiency right-angle industrial reducer designed for applications requiring directional change with strong torque transmission. Featuring a durable cast iron housing and available with a 65mm hollow bore output shaft, the B143 provides exceptional load handling, reliability, and smooth performance in conveyors, mixing systems, process automation, and bulk material handling.

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Key Specifications

Manufacturer: Motovario
Series: B Series – Bevel Helical Gearboxes
Model: B143
Output Bore Options: 65mm Hollow Bore
Ratio Range: 10.84:1 – 187.24:1
Input Motor Mounts: 100–112B5 | 132B5 | 160B5 | 180B5 | 200B5
Max Motor Frame Size: IEC 200
Housing Material: Cast Iron
Paint Finish: RAL 5010 Industrial Blue
Lubrication: Synthetic ISO VG220

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Mechanical & Construction

Gear Train: Bevel + Helical gearing for efficient right-angle transmission
Bearings: Heavy-duty taper roller bearings on output
Oil Seals: NBR Nitrile – Input & Output
Heat Dissipation: Ribbed enclosure for improved cooling
Backlash: Low backlash for precision industrial drive
Build Quality: Shock-resistant design for demanding loads

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Performance & Duty Rating

Torque Output: Very high, motor & ratio dependent
Efficiency: High bevel/helical efficiency
Duty Cycle: S1 Continuous industrial service
Operating Position: Horizontal or vertical
Noise Characteristics: Quiet running for heavy-duty machinery

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Environmental & Compliance

Ambient Temperature: –20°C to +40°C
Protection: Oil-sealed for industrial environments
Corrosion Protection: High-grade exterior coating

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Ratio Options (B143)

• 10.84 | 11.87 | 14.49 | 17.04 | 18.66 | 21.00 | 22.77
• 25.63 | 27.44 | 30.05 | 33.01 | 36.67 | 40.29 | 44.16
• 48.35 | 53.16 | 54.63 | 59.02 | 64.88 | 70.43 | 77.12
• 85.54 | 94.13 | 105.83 | 111.94 | 124.62 | 136.44
• 149.59 | 166.53 | 187.24

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Accessories & Options

Available:
– Torque arms
– Output covers & installation hardware
– Plug-in solid shafts (single or double)
– Output flanges & double-worm modules
– Motor adaptors & mounting kits

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Features & Benefits

• ✅ Right-angle gearing ideal for compact drive layouts
• ✅ 65mm bore option for wider shaft compatibility
• ✅ Cast iron strength for industrial harsh-duty environments
• ✅ High load capacity using taper roller bearings
• ✅ Drives IEC 100–200 motors for powerful machine output

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Typical Applications

• Conveyors & bulk handling
• Mixers, crushers & agitators
• Pumps, blowers & process drive systems
• Industrial machinery requiring 90-degree torque delivery
• OEM and MRO heavy-duty automation

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Why Buy from Worm Gear Motors Online

Genuine Motovario products: Fully warrantied and traceable.

Engineering validation: Torque, mounting & ratio checks before dispatch.

Fast UK delivery: Emergency and scheduled availability.

Best Price Guarantee: If you find it cheaper, we’ll beat it!

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Order the Motovario B143 Bevel Helical Gearbox Today

All ratio and mounting configurations available with full technical support.
Contact us for pricing, torque specifications & lead time