Italian manufacturer MB Crusher is currently promoting its attachment equipment with the promise of converting site constraints into profitability. The South Tyrolean company specializes in mobile crushing and screening equipment that is mounted directly on excavators and wheel loaders. The core thesis: Where space, transport capacity, or permits are lacking, compact attachment solutions should replace conventional stationary crushing plants and process material directly on site.
The Promise: On-Site Processing Instead of Hauling Away
MB Crusher addresses a real problem: On inner-city construction sites, renovations, or in nature reserves, construction companies regularly hit limits. Narrow access roads, limited storage space, noise protection regulations, and high landfill costs make hauling away demolition waste or excavated material expensive. The manufacturer argues that jaw crushers, screening buckets, and shovels with integrated processing technology can compensate for these constraints.
The equipment is mounted directly to hydraulic excavators of at least three tons operating weight or wheel loaders via quick-change systems. In theory, this enables the conversion of construction waste into reusable material – without separate transport vehicles or additional operators. The material stays on site, landfill costs are eliminated, tipping fees are avoided.
Technical Reality: Throughput and Operating Hours
The crucial question for fleet managers and buyers is: How realistic is the profitability promise? The answer depends heavily on the application profile and material. MB Crusher offers various product lines, from compact jaw crushers with 400 to 700 mm mouth opening to screening buckets for grain sizes of 20 to 120 mm. Throughput varies by model and material between two and 80 cubic meters per hour.
A practice-relevant example: A mid-range jaw crusher attachment on a 20-ton excavator processes construction debris at approximately 15 to 20 cubic meters per hour. For comparison: A mobile crushing plant achieves 100 to 250 cubic meters per hour. The difference is significant but can be economically justified for projects under 5,000 cubic meters total volume – provided the alternative is hauling by truck.
Hydraulic Requirements and Machine Utilization
A critical point is the hydraulic power of the carrier machine. Crusher attachments require 120 to 200 liters of oil flow per minute at 250 to 350 bar depending on design. Not every excavator or wheel loader delivers these values as standard. Retrofits to the hydraulics increase investment costs and can affect warranty claims. Additionally, diesel consumption of the carrier machine increases by 30 to 50 percent during crushing operations compared to conventional digging or loading work.
MB Crusher promotes the equipment as a solution for demolition and recycling projects where machines are already on site anyway. That's true – but only if the carrier machine is not otherwise occupied. If an excavator is tied up for the crushing operation, it's unavailable for earthwork or material handling. This must be factored into the calculation.
Amortization: When Does the Deployment Pay Off?
Amortization depends on three factors: acquisition costs, avoided transport costs, and revenues from processed material. A jaw crusher attachment for a 20-ton excavator costs 30,000 to 60,000 euros, depending on design and wear protection. Screening buckets start at 15,000 euros.
The savings come from avoided transport costs – typically 15 to 25 euros per cubic meter for removal and disposal of construction debris class Z2. For a project with 3,000 cubic meters of demolition material, that equals 45,000 to 75,000 euros. Add to this the value of recycled material, such as fill material for site roads or backfill.
The calculation works if the attachment is used in at least three to four projects per year and the carrier machine is not permanently needed elsewhere. With a one-time use, the investment does not pay for itself – rental is the more economical option here.
Limitations in Practice
MB Crusher clearly communicates the advantages but only mentions some limitations in passing. Crusher attachments operate louder than standard attachments. Noise protection requirements, which are particularly restrictive in inner cities or residential areas, remain in effect. While the equipment is more mobile than stationary plants, noise emissions are 100 to 110 dB(A) at one meter distance – comparable to a hydraulic hammer.
Additionally, on-site processing requires that the material can actually be used on site. If the project has no use for recycled material, the economic advantage disappears. Also, grain quality and homogeneity are lower with attachments than with stationary plants featuring multi-stage screening and secondary crushing.
Conclusion: A Niche with Clear Limits
MB Crusher serves a real market niche: projects with limited space, high transport costs, and demand for recycled material on site. For these applications – inner-city renovations, smaller demolition projects, rural infrastructure work – the attachments can indeed improve profitability. However, the promise of converting constraints into profitability comes with conditions: sufficient project volumes, carrier machines with suitable hydraulics, on-site use of material, and realistic throughput expectations.
For larger projects of 10,000 cubic meters or more, or permanent recycling tasks, stationary or mobile crushing plants remain the more economical solution. The attachments are a useful supplement but not a replacement for specialized processing equipment. Those who understand the limitations and carefully calculate application profiles can reduce downtime and cut costs with these machines. However, the marketing promise should not be confused with technical reality.
