XRV050 Worm Gear Reducer | IP67 Slaughter & Washdown

XRV050 Worm Gear Reducer — IP67 Wet-Environment Series for Slaughter & Washdown

Complete Technical Parameters — XRV050

The parameter image below provides an overview of the XRV050 dimensional and performance envelope. The full numerical parameter table immediately follows.

Full Performance Parameter Table

Column headers: i = reduction ratio; n2 = output shaft speed (rpm) at 1,400 rpm input; Mn2 = rated output torque (Nm); Fr2 = permissible radial force on output shaft (N); Motor = motor flange code; P1 = input motor power (kW); L = total unit length (mm). All values at 1,400 rpm motor speed, oil-bath lubrication, 20°C ambient.

Rated at 1,400 rpm input speed, oil-bath lubrication, 20°C ambient. Motor codes: 7114 = 71B14, 7124 = 71B24, 7134 = 71B34, 8024 = 80B24. Contact us to confirm exact values for operating temperatures above 40°C or below −5°C.

Motor Dimensions — IP56 & IP67 Variants

Design Features That Make the XRV050 Suited to Wet & Food Environments

 

Industries and Applications

▸ Slaughterhouse & Meat Processing Drives

Carcass transfer conveyors, scalder paddlers, de-hairing drum drives, and chiller conveyor lines in slaughterhouses share three characteristics: continuous duty, daily high-pressure wash-down with hot water and detergent, and frequent floor flooding during cleaning shifts. The XRV050 at ratios of 20:1–40:1 paired with a 0.37–0.55 kW motor covers the typical conveyor drive requirement at the standard chain speeds used on most Asian and European commercial slaughter lines. IP67 protection handles the flood cleaning cycles; the SUS304 wheel hub handles any water ingress events without accelerated corrosion.

▸ Automatic Car Washing Systems

Car wash brush drives and conveyor traction units run in constant contact with water, detergent foam, and high-pressure spray. The XRV050 was originally developed for this application — the IP67 rating ensures long-term operation in this environment, and the compact NMRV-style housing fits within the space constraints of typical car wash tunnel structures. Common configurations are 15:1 at 93 rpm output for side brush drives and 20:1 at 70 rpm for conveyor traction.

▸ Field & Outdoor Equipment — Agricultural and Environmental

The powder-painted ADC12 housing and IP67 sealing make the XRV050 suitable for field-deployed equipment that experiences rain, irrigation spray, and morning condensation across extended outdoor service periods. Irrigation system drives, greenhouse ventilation actuators, and outdoor environmental monitoring equipment with intermittent rotation requirements are typical applications at ratios of 50:1–100:1. For the full range of available worm gear reducer configurations, see the product category.

 

Motor Selection for the XRV050

Motor selection for this worm gear reducer follows three criteria specific to wet and food-zone environments:

• ◉ Motor IP rating must match environment. Pairing an IP67 gearbox with an IP55 motor defeats the water protection purpose. Specify an IP67 motor for full immersion risk environments or IP56 for splash-only environments. The motor dimension table above shows the length (L) and diameter (D) changes between IP56 and IP67 motor variants for the same IEC frame — confirm against your machine envelope.
• ◉ Motor shaft diameter must match input bore. The XRV050 input bore is Φ14 (standard, for 71B14 motor) or Φ19 (for 80B14 motor). Verify the motor shaft diameter from the motor nameplate matches the gearbox input bore for a direct, keyway-drive connection.
• ◉ Motor power selection: use the P1 column, not just the output torque. At low ratios (5:1–10:1), the combination of high output speed and lower efficiency means the motor P1 requirement is driven by the output power × (1/efficiency) — often a larger motor than a naive torque calculation suggests. Read the P1 value from the table for your chosen ratio and torque row, then select the next standard motor power at or above that figure.

Korea Ever-Power supplies XRV050 units with matched IP56 or IP67 motors as a complete geared motor assembly on request. Contact us via the Korea Ever-Power product page with your required ratio, output torque, and motor IP rating.

Matched Drive Components

The XRV050 worm wheel, worm shaft, and output coupling each have different service intervals and wear characteristics. Sourcing replacement parts from the same manufacturer ensures dimensional and material compatibility — particularly important in food processing and slaughter environments where an unplanned drive failure causes costly line downtime.

Frequently Asked Questions

What is the difference between IP56 and IP67 protection on the XRV050?

→ IP56 certifies protection against powerful water jets from any direction — the standard for equipment subject to high-pressure spray cleaning but not expected to be immersed. IP67 adds temporary full immersion protection to 1 m depth for 30 minutes. In a slaughterhouse where drainage can be slow and the floor may flood during cleaning shifts, IP67 provides significantly better protection than IP56. The gearbox housing and seals are the same between IP56 and IP67 variants; the difference lies in the seal specification of the matched motor.

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What makes the 12:1 and 52:1 ratios useful compared to the standard NMRV options?

→ The standard NMRV series jumps from 10:1 (140 rpm output) to 15:1 (93 rpm) and from 50:1 (28 rpm) to 60:1 (23 rpm). If your conveyor target speed is 117 rpm or 27 rpm, a standard unit forces you either to over-speed or under-speed the line and compensate with an inverter or mechanical adjustment. The XRV050 12:1 and 52:1 ratios directly hit those speeds at rated motor speed — simpler, lower cost, and more energy efficient than inverter compensation.

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What is the Fr2 value and why does it matter for conveyor drives?

→ Fr2 is the maximum permissible radial load on the output shaft at the shaft nose (midpoint of the output shaft extension). For a conveyor drive where a chain sprocket or belt pulley is mounted on the output shaft, the chain or belt tension creates a radial force that must not exceed Fr2. At 20:1 ratio, Fr2 is 2,503 N — meaning a chain pull up to approximately 250 kg-force can be applied to the output shaft without overloading the output shaft bearings. Exceeding Fr2 accelerates bearing wear and can cause shaft deflection that damages output seals.

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Why does the unit length (L) change between 180 mm and 205 mm?

→ The 205 mm total unit length corresponds to the 80B14 motor flange (IEC frame 80), which is physically longer than the 71B14 flange configuration. When you select the 80B14 motor option — typically required at the higher motor power ratings of 0.75 kW and 1.1 kW — the total assembly is 25 mm longer. Confirm your machine envelope allows 205 mm if specifying the larger motor frame.

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Can I use standard mineral gear oil instead of synthetic in the XRV050?

→ Technically yes, but synthetic VG 320/220 is strongly recommended. In wet environments and food processing zones, the gearbox may experience wider ambient temperature swings than in a controlled factory. Synthetic oil maintains its viscosity within the required range at both low and high temperature extremes, providing better film thickness at startup in cold environments and lower viscosity breakdown in hot areas. Mineral oil of equivalent grade is acceptable for controlled indoor temperature environments only.

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Is the XRV050 self-locking and can it hold a suspended load?

→ At ratios of 20:1 and above, the single-start worm in the XRV050 produces self-locking — the output shaft cannot back-drive under static load when the motor is off. This is confirmed by the parameter data: at 20:1, output speed is 70 rpm and the worm lead angle falls below the mesh friction angle. For ratios of 5:1 through 15:1, the higher lead angle means self-locking is not guaranteed — do not rely on the worm gear alone to hold a suspended load at these ratios.

What Customers Say

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Kwon Byung-soo, Maintenance Engineer, Gyeongnam Pork Processing Plant (2024)

"Switched to XRV050 on our scalder conveyor after two years of replacing standard IP55 units every 4–6 months. The XRV050 units are now at 14 months with no seal failures. The floor flooding during night cleaning used to destroy the previous units — IP67 ends that problem."

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Lee Tae-young, Equipment Manager, Incheon Automatic Car Wash Manufacturer (Q2 2024)

"We've standardised on the XRV050 across our entire car wash conveyor product line. The 12:1 and 15:1 ratios give us the exact brush tip speeds we need without inverter tuning. Ordered over 200 units in the past 18 months — zero DOA and no warranty returns."

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Choi Dae-won, Mechanical Engineer, Seoul Food Equipment OEM (2025)

"The parameter table was the deciding factor. I could confirm the 52:1 ratio hit our exact required line speed and check Fr2 against our chain pull in one table lookup — no back-and-forth with the supplier to get performance data. That alone saved two days on the design review."

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Park Min-gyu, Production Manager, Busan Poultry Processing Facility (late 2024)

"The SUS304 wheel hub was the specification we needed to get our equipment supplier's sign-off on the food safety review. Standard NMRV with carbon steel hub was rejected by our auditors. XRV050 passed without issue."

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Shin Kang-ho, Field Service Technician, Jeollabuk Agricultural Equipment Co. (Q1 2025)

"Running XRV050 on greenhouse ventilation actuators — outdoor, exposed to rain, temperature cycles from −5°C winter to +45°C summer. Two years in and still on the original oil fill. The powder coat is intact. Haven't had to service any of the 35 units deployed."

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Oh Ji-hyun, Procurement, Daegu Food Machinery Integrator (2024)

"Delivery was 5 days on a stock ratio. IP67 certification document arrived with the shipment — exactly what we needed for the equipment registration file. Priced competitively against Japanese equivalents. Will be our go-to for wet-zone drives going forward."