OBM Trapezium Grinding Mill for Sale
The OBM trapezium grinding mill is an upgraded version of the Raymond mill. It features bevel gear transmission, full thin-oil lubrication technology, intelligent PLC centralized control, and a high-efficiency pulse dust collection system.
- Feed Size: ≤40MM
- Hourly Output: 3-25t/h
- Fineness: 80-400 mesh
Qualified OBM Trapezium Grinding Mill Manufacturer
Sandreck is a professional OBM trapezium grinding mills supplier, boasting its own manufacturing facility and over twenty years of production experience.
We possess a deep understanding of the diverse requirements for powder applications across various industries. Sandreck’s OBM trapezium grinding mill features a high-efficiency powder selection and classification system, allowing for flexible adjustment of the finished product’s fineness—ranging from 80 to 400 mesh—to meet specific production needs.
This grinding mill can process a wide range of materials with a Mohs hardness up to 9.2, including limestone, granite, and barite. Regardless of your industry, Sandreck offers professional grinding solutions and looks forward to becoming your trusted, long-term partner.
OBM Trapezium Grinding Mill Advantages

The structure is more compact, occupying less space to reduce project investment.

Equipped with a professional dust collector and overlapping multi-stage seals with good sealing performance.

The grinding roller and grinding ring are made of wear-resistant alloy, doubling service life.

Compared with the traditional air duct, ours has a smooth inlet, low resistance, and easy material dispersion.

Equipped with a PLC-based fully automatic intelligent control system, the system can be remotely controlled.

The dust-removal effect of the OBM trapezoidal mill fully meets national dust-emission standards.
Unique Vertical Swing Grinding Roller Device
As a grinding mill factory, Sandreck’s OBM trapezium mill features a horizontally arranged vertical swing device. The centrifugal force generated by this device increases by nearly 35%, boosting the energy available for pulverization and resulting in a 35% increase in output.
The vertical swing device ensures parallel contact between the grinding rollers and the grinding ring, thereby facilitating more effective material pulverization and promoting uniform wear within the grinding zone. This even wear pattern extends the service life of the Raymond mill by 30%.


Adjustable Fineness
If you need finished products of different coarseness and fineness, our OBM trapezium grinding mill can meet your needs by adjusting the type, size, and filling quantity of the grinding media, or by controlling the grinding time. Whether for coarse or fine grinding, this grinding mill equipment fully satisfies your production requirements.
How does OBM Trapezium Grinding Work?

Sandreck’s OBM trapezoidal grinding mill employs a continuous, air-circulating, closed-circuit process consisting of four main stages.
1. Feeding and Grinding
The OBM trapezoidal grinding mill feeds material into its grinding chamber uniformly via a feeding device. The grinding rollers and grinding rings crush the material using centrifugal force combined with scrapers.
2. Classification and Return
The airflow transfers the material to the classifier at the top of the OBM trapezoidal grinding mill. Material that meets fine powder standards enters the collection system, while material that does not meet the standards is returned to the main mill for regrinding.
3. Product Collection and Airflow Circulation
The qualified material exits the main mill and enters the cyclone powder collector via a pipeline for solid-gas separation. The material separated from the gases is considered the finished product.
The clean air that is separated returns to the main mill through a fan-driven return pipe, enabling a closed-in, order-efficient negative-pressure airflow system.
4. Environmental Dust Removal
Residual gas and fine powder are directed to a dust collector, where dust is collected and purified gas is discharged, meeting environmental requirements.
Your Exclusive Customization
Are you new to the OBM trapezium grinding mill? Don’t fret. Sandreck customizes your equipment to better serve your needs.

We will customize the power and classifier selection for your OBM trapezium grinding mill based on your material hardness, moisture content, and required output to ensure optimal processing capabilities and energy efficiency.

We can customize the OBM trapezium grinding mill’s classification system to meet your finished product fineness specifications. We will provide full 80-400 mesh control so that your powder meets your quality standards.

We will consider the site’s plant conditions and provide a complete feeding, discharging, and dust-control process integrated into the new grinding mill system.

We will accommodate your production schedule for the installation, commissioning, and training of your grinding mill. We will create a service support profile and respond effectively to your after-sales needs to ensure sustained production.
Trapezium Grinding Mill Cases
Sandreck is a well-known Chinese grinding mill manufacturer that has served over 1,000 sand and gravel processing plants.
Processing material: Calcium Carbonate
Capacity: 50-100 t/h
Finished product particle size: 80-400 mesh
Processing material: marble
Capacity: 30 t/h
Finished product particle size: 80-400 mesh
More About Our Company
- Technical Parameters
- Technical Parameters
| Specifications | OBM115G | OBM145G | OBM158G | OBM178G | OBM198G | OBM218G | |
| Number of Grinding Rollers( PCS) | 4 | 4 | 4 | 4 | 5 | 5 | |
| Host Speed (r/min) | 110- 125 | 86-110 | 80-95 | 65-90 | 60-75 | 55-70 | |
| Maximum Feed Size (mm) | 30 | 35 | 38 | 40 | 40 | 50 | |
| Finished Product Size | mm | 1.6 -0.045 finest 0 .038 | |||||
| Mesh | 10- 325, finest 400 | ||||||
| Yield (t/h) | 3- 12 | 6 -23 | 8-30 | 10-38 | 15-46 | 18- 55 | |
| Dimensions(mm) | 8425*7933*8642 | 8971*9630*11185 | 10200*9100*10100 | 10268*9595*10351 | 12150*12500*11000 | 14960*12440*11560 | |
| Name | Project | Specifications, Technical Parameters | ||||||
| OBM115G | OBM145G | OBM158G | OBM178G | OBM198G | OBM218G | |||
| Main Engine Motor | power (kW) | 55-75 | 110- 132 | 132- 160 | 185-200 | 220-250 | 280- 315 | |
| Powder Classifier Speed Regulating Motor |
power (kW) |
7.5 – 11 |
18.5 – 30 | 22- 30 | 30- 37 | 37- 55 | 55-75 | |
| Centrifugal Fan Motor | power (kW) | 55-75 | 110- 132 | 132- 160 | 185-220 | 220-250 | 280- 315 | |
|
Auxiliary Machine Part (reference) |
Crusher |
model
| PE250*400 | PE250*750 | PE250*750 | PE250*1000 | PE250*1200 | PC1010 |
| motor power(kW) | 15 | 22 | 22 | 30 | 37 | 110 | ||
|
Recommend | model | TH200*8.13m | TH300*9.55m | TH300*9.55m | TH300*10.55m | TH300*13.05m | TB315*12.43m | |
| motor power(kW) | 3 | 4 | 4 | 4 | 5.5 | 11 | ||
| Feeder | model
| GZ2F | GZ3F | GZ3F | GZ4F | GZ5F | GZ5F | |
| power (kW) | 0.15 | 0.2 | 0.2 | 0.45 | 0.65 | 0.65 | ||
| Buffer Bin | capacity ( m³) |
1.5 | 2.5 | 3.3 | 4.5 | 22.4 | 22.4 | |
According to factors such as material characteristics, output requirements, and energy consumption, comprehensively consider equipment quality, degree of automation, and environmental protection performance to ensure high efficiency, durability, and compliance with production requirements.
When using it, it should be noted that processing flammable and explosive materials with high water content is forbidden, and that it should be started, run, and stopped in strict accordance with the operating procedures to ensure safety.
The main components include supporting equipment such as the main machine, powder selector, fan, dust collector, as well as core components such as grinding rollers, grinding rings, pressure springs, plum blossom racks, and scraper systems.
We are a Chinese grinding mill factory. Each unit is at the factory price. You can leave a message via WhatsApp (+8613666293477), and we will contact you as soon as possible.
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