Inspection of extraction tower bullgears for early detection of cracks.

Scope of services

  • Checking of the bullgear for surface cracks using the magnetic particle method
  • Test report including documentation of the dimensions and position of cracks
  • Repair recommendations

Optional extra: Grinding down of cracks during testing.

Number of staff

Crack testing is carried out by a single BMA service technician. The customer has to make available a second person for the entire duration of the inspection and, on request, also an additional employee.


Charges for a BMA service technican for the duration of the bullgear crack testing.

1) Extraction towers with diameters > 7,60 m EUR 2,432.00  
2) Extraction towers with diameters 7.90 m to 9.60 m EUR 2,432.00  
3) Extraction towers with diameters > 10.60 m (bis max. 13,60 m) EUR 3,648.00  

Additional Charges

Additional charges for travel times, and expenses for daily allowances, accommodation and travel

1) Travel times   A service visit normally requires two (2) days of travel. These are calculated at the daily rate.
2) Accommodation at cost Receipts are provided.
3) Travel expenses at cost Air travel to the nearest airport, travel from local airport to the factory, etc.; receipts are provided.
4) Daily allowances at cost Allowance according to the legal requirements.

Please click here for daily allowance rates.

Billing of the order is performed once the inspection is complete and based on actual travel expenses.

All prices are net prices exclusive of VAT. Bank charges incurred in Germany are paid by BMA. All costs incurred outside Germany in connection with services and the payment for services such as taxes, bank charges and/or similar costs are paid by the customer.

Our General Terms and Conditions apply.

Payment terms

Payment immediately and in full on receipt of our invoice prepared by us based on the hours/days on the time sheets countersigned by the customer.

Appointment scheduling

We will call you a couple of days after receiving your order to arrange an inspection date. We always do our utmost to meet tight deadlines.  

Preparations by the customer

To keep to a minimum the time required for crack testing, please ensure the following steps have been completed before the visit by a BMA service technician: 

In case of emergency

Our network is available to you worldwide. 
Please send an e-mail with a description of the problem
We will get in touch with you as soon as possible.

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