Master™ 311 Belt Scale Weigh Frame

As of: Wednesday, July 9, 2025

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Standard Features

Semi-modular weigh frame design
Weigh frame without moving parts
Fits standard conveyors
Mounts with four bolts
Requires weigh frame cutting for proper fit
Minimal modifications to conveyor required

Options

Galvanized or stainless construction
Custom widths available
Custom lifting weights available on request

Applications

Mining, quarries, bulk material blending, process control and retrofit

311M Master™ Belt Scale Weigh Frame

Consisting of an idler or weighing roller placed on a simple load cell beam, the 311M Master belt scale weigh frame is a cost-effective solution. Suitable for belt widths up to 1.500 mm and belt speeds up to 2 meters per second, the 311M frame is often used for belts that can regulate the capacity of a bulk flow using the measured value and a controlled belt speed.

311 Master Belt Scale Weigh Frame Specifications

Belt Width:
18 to 36 in (457 to 914 mm)

Capacity:
1,500 tons per hour

Belt Speed:
Maximum 400 ft/minute (2 m/s)

Inclination:
Maximum 12 degrees

Material:
Powder coated mild steel

Accuracy System:
1%

Load Cell:
RL1218A: 50 kg, 100 kg, 250 kg

Warranty:
One-year limited

Parts

Part #	Description

Consult	Lifting weight kit
215031	311-36-250, MASTER Master 311 Weigh Frame, 36 inch belt, 250kg Load cell
215030	311-30-250, MASTER Master 311 Weigh Frame, 30 inch belt, 250kg Load cell
215025	311-30-150,BELT SCALE Master 311 Weigh Frame, 30 inch belt, 150kg Load cell
215023	311-24-150, MASTER Master 311 Weigh Frame, 24 inch belt, 150kg Load cell
215022	311-24-75, MASTER Master 311 Weigh Frame, 24 inch belt, 75kg Load cell
215021	311-18-75, MASTER Master 311 Weigh Frame, 18 inch belt, 75kg Load cell