The Bosch hand grinding machine is a versatile tool widely used in construction and mining industries for precision grinding, cutting, and polishing. In Malaysia, prices typically range from MYR 150 to MYR 800, depending on model and specifications. Below is a comparison of popular models:
| Model | Power (W) | Disc Size (mm) | Price (MYR) |
|---|---|---|---|
| Bosch GWS 060 | 670 | 100 | 150–250 |
| Bosch GWS 22-230 | 2200 | 230 | 600–800 |

A complete sand and gravel production line includes primary crushing, secondary crushing, sand making, screening, and conveying. Key equipment:
1. Jaw Crusher: For coarse crushing (e.g., feed size: ≤1200mm, capacity: 50–800t/h).
2. Cone Crusher: For medium/fine crushing (e.g., output size: ≤30mm).
3. Vertical Shaft Impact Crusher (VSI): Produces high-quality sand (0–5mm).
Q1: What’s the lifespan of a Bosch grinder?
A: With proper maintenance, it lasts 3–5 years in industrial use.
Q2: How to choose a sand production line?
A: Consider raw material hardness, required output size, and capacity (e.g., 50t/h vs. 200t/h).

A Malaysian quarry upgraded to a 150t/h granite crushing line using:
– Primary jaw crusher (PE750×1060)
– Secondary cone crusher (HPT300)
– VSI crusher for sand shaping. Result: 40% higher efficiency and ISO-standard sand output.