Where does the extra price of a mobile tool cabinet go?

Answer: Into castors, plates and the reinforced base, about 18 percent of cost, buying one operator instead of three.

Is the lowest cost per kilogram always the better buy?

Answer: No. The fixed cabinet at 3.0 CNY per kg is lowest, yet six moves a day costs 1,500 person-hours.

Can a three-tier tool cart replace it?

Answer: Below 120 kg and 30 m one way, yes. Past that the 75 mm wheel must clear a 12 mm threshold, and the drawers carry no lock.

Where does a plastic tote cabinet fit?

Answer: Dry, room-temperature work under 45 kg. Impact strength falls below minus 5 degrees Celsius, and with no wheels or lock it does not travel.

Does a rough floor always mean bigger wheels?

Answer: Check particle size. Above 2 mm grit a 100 mm wheel reads 0.8 g and a 75 mm wheel 1.4 g; a 125 mm wheel drops to 0.6 g but lifts the centre of gravity 25 mm.

Mobile Tool Cabinet vs Alternatives: Where the Gap Comes From

Quick answer: Compare a mobile tool cabinet, a fixed cabinet, a tool cart and a plastic tote cabinet on five metrics: mobility, cost per kilogram of load, life, service frequency and floor tolerance. Aligned, the price gap is one ranking row; daily moves and floor decide the rest.

Five Metrics to Align Before Any Mobile Tool Cabinet Comparison
Mobility Is a Distance Question, Not a Wheel Question
Converting Price into Cost per Kilogram
Service Life and Floor Tolerance
Service Frequency and Five-Year Cost
FAQ

1. Five Metrics to Align Before Any Mobile Tool Cabinet Comparison

Four quotations on one desk, and the mobile tool cabinet is rarely the cheapest. Price alone bends the answer.

For a mobile tool cabinet, mobility is moves per day times distance, not the presence of wheels. Cost per kilogram is price over rated load. Life ends at first unrepairable failure; floor tolerance matches tread to surface.

Option	How it moves	Rated load	Cost per kg	Life	Services a year
Mobile tool cabinet	One operator, 100 mm castors	260 kg	8.1 CNY	8 years	1.1
Fixed cabinet	Forklift or three people	600 kg	3.0 CNY	12 years	0.4
Three-tier tool cart	One operator, 75 mm castors	120 kg	6.5 CNY	5 years	2.4
Plastic tote cabinet	Two people, no wheels	45 kg	5.8 CNY	3 years	1.8

Whole-cabinet load is not drawer load: 60 kg per drawer against 260 kg total, versus 120 kg per shelf on the fixed cabinet. Never add four castor ratings together: apply 0.7.

2. Mobility Is a Distance Question, Not a Wheel Question

Two moves or fewer under 20 m one way favour a fixed cabinet; six moves over 20 to 80 m repay the difference in labour. Past 80 m or on a ramp, 100 mm castors stop working.

Mobile tool cabinet: two black moulded cases side by side, blue lid trim and blue latches, sand-grain walls, pale grey background

A 760 mm mobile tool cabinet through an 800 mm door leaves 20 mm per side, a loaded turning radius of 1.4 m needs a 1.6 m aisle, and 260 kg up a 5 degree ramp takes about 90 N.

A 75 mm cart must clear a 12 mm threshold six times a day; a 45 kg tote cabinet takes two people four minutes a move.

3. Converting Price into Cost per Kilogram

2,100 CNY over 260 kg returns 8.1 CNY per kg, the fixed cabinet 3.0, the cart 6.5, the tote 5.8. Load times life gives 2,080, 7,200, 600 and 135 kg-years, or 1.01, 0.25, 1.30 and 1.93 CNY per kg-year.

Utilisation moves the mobile tool cabinet again: line-side units run 75 to 85 percent full. Six moves a day at one person-hour each over 250 days is 1,500 hours, or 90,000 CNY at 60 CNY per hour, so the endpoint is cost per usable transfer.

4. Service Life and Floor Tolerance

Eight years covers roughly 12,000 pushes, castors and slides failing first; replacements stretch it to 10 years. The fixed cabinet reaches 12 years, the cart cracks at welds by year five, and the tote cabinet lasts three years with 30 percent less impact strength at minus 5 degrees Celsius.

Epoxy screed near 0.5 dislikes sharp grit; concrete at 0.6 carries 2 mm particles. Under 260 kg a 100 mm polyurethane wheel reads 0.8 g on such grit, a 75 mm nylon wheel 1.4 g.

5. Service Frequency and Five-Year Cost

The log gives 1.1 services a year, 0.4 fixed, 2.4 cart, 1.8 tote, mostly re-torquing plates and greasing slides.

Option	Services a year	Hours each	Five-year spares	Index
Mobile tool cabinet	1.1	0.8 h	320 CNY	100
Fixed cabinet	0.4	1.2 h	180 CNY	76
Three-tier tool cart	2.4	0.4 h	260 CNY	118
Plastic tote cabinet	1.8	0.3 h	140 CNY	92

At two moves a day the index is 100 here, 76 fixed, 118 cart, 92 tote. At six moves it climbs to 340, 190 and 210, and the ranking inverts.

Conclusion

The difference between the options is who carries the transfer cost: the fixed cabinet in labour, the cart in a load ceiling, the tote cabinet in life and cold behaviour, and the mobile tool cabinet in castors and base plate. Where that cost is booked decides how many trips a day are viable, and trips decide whether the cost per kilogram of a mobile tool cabinet is ever realised.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.