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Master™ 311M Belt Scale Weigh Frame

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


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


  • 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 BS311 frame is often used for belts that can regulate the capacity of a bulk flow using the measured value and a controlled belt speed.

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

1,500 tons per hour

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

Maximum 12 degrees

Powder coated mild steel

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

One-year limited

Resources / Downloads

Title Download Email
Master 311M Belt Scales Catalog Page Download Email

Title Version Revision Download Email Category Archived
Master 311, 311M and 711 Weighframes Installation Manual A Download Email Belt Scale Components|Belt Scales No

Title Download Email
Belt Scale Application Questionnaire Download Email

Title Collateral Wizard Request Download Email Category
Belt Scale In-Motion Systems Collateral Wizard Request Download Email Belt Scales|Bulk Indicators/Controllers
Master 311M Belt Scales Download Email


311M Master Belt Scale Parts

Part # Description List Price Cart
163296 311M Belt Scale with 50Kg Load Cell

List Price: $1,535.00

163297 311M Belt Scale with 100Kg Load Cell

List Price: $1,535.00

163298 311M Belt Scale with 250Kg Load Cell

List Price: $1,535.00

Consult Lifting weight kit

Call for price


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Replacement Parts

Replacement parts can only be purchased through trained and authorized dealers. You must be logged in as a dealer to view any available replacement parts.

To locate a dealer in your area, please call us at 1-800-472-6703 or fill out a request online.

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Master™ 221DB Belt Scale Weigh Frame

Medium to Heavy Capacity - The 221DB is suitable for most belt widths and capacities and is ideal in various market segments.

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