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Forestry, municipal and grounds care equipment: Tests and services

Machines & equipment

Unbiased and independent, DLG is the authoritative agency when it comes to assessing the utility value as well as the safety and reliability of forestry, municipal and grounds care equipment.

The tests provide buyers with unbiased and reliable information on the products they are using. Equipment that has passed a DLG test has given evidence of its dependable performance on the test stand and in the lab.
The DLG engineers offer manufacturers of small power equipment a comprehensive service which includes consultancy, safety tests to Machinery Directive requirements, type approval tests, GS tests and further certification tests.

The DLG test engineers assess the practicality of small power equipment and award the DLG-APPROVED quality seal in collaboration with the German Center for Forest Work and Technology (KWF) which is also based in Groß-Umstadt and where the usability tests take place.

The DLG Test Center not only carries out tests to DLG standards and approval tests to specific standards and regulations, it also offers a wide range of services in the field of quality assessment or to customer-specific R&D requirements.

German Test and Certification Center for Agricultural and Forestry Machinery (DPLF)

The DPLF in Germany is a certification lab that is jointly operated by the German Center for Forest Work and Technology e.V. (KWF) and the DLG TestService GmbH.  It offers manufacturers of municipal equipment a wide range of product certifications for agricultural, forestry equipment and machines for park and highway maintenance.

Our expertise

  • Chain saws and telescopic loppers (comprehensive type approval test)
  • Lawnmowers, scarifiers, hand-held motor mowers, power hoes
  • Brush cutters, grass trimmers, lawn trimmers, lawn-edge trimmers
  • Hedge trimmers
  • Leaf blowers, leaf suckers
  • Post hole diggers
  • Grinders
  • Flail mowers

General forestry and grounds care tools:

  • Sound measurements to Outdoor Directive 2000/14/EC, Machine Directive 2006/42/EC
  • Vibration measurements to Machine Directive 2006/42/EC

Brush cutters and grass trimmers to EN ISO 11806-1:

  • Thrown-object test
  • Brush cutter impact test incl. cord trimmer head overspeed testing
  • Blade guard dimensions and strength
  • Bend test of single-piece metal blades on brush cutters to ISO 7113

Lawn mowers to EN ISO 5395-1, EN ISO 5395-2, EN ISO 5395-3 and EN 60335-2-77:

  • Blade stopping time test
  • Rotary mower blade impact tests
  • Rotary mower housing strength tests
  • Thrown-object tests on rotary mowers

Flail mowers:

  • Thrown-object tests on flail mowers to EN 12733 and EN 13524 and ISO 17101-2

Chain saws and angle-grinders:

  • Chain saw kickback testing to ISO 9518 and ANSI/OPEI B175.1
  • Chain saw engine performance tests to ISO 7293
  • Chain stopping time to ISO 6535 (in collaboration with KWF)
  • Automatic chain brake release force acceleration to ISO 13772 (in collaboration with KWF)
  • Hand guard safety to ISO 6534 including ISO 6533 (front hand guard dimensions) (in collaboration with KWF)
  • Chain catcher tests to ISO 10726 (in collaboration with KWF)
  • Chain saw handle tests to ISO 7915 and ISO 6533 (front handle dimensions) and ISO 7914 (minimum handle clearance and size) (in collaboration with KWF)
  • Balance tests to ISO 8334 (in collaboration with KWF)
  • Drop tests ISO 11681 (in collaboration with KWF)
  • Strength test of (with captive bolt gun) grinder wheel guards to EN ISO 19432
  • We have an engine test stand for heat-up measurements to EN 60335-1, EN 60745-1 and EN 62841-1
  • Enclosure protection class tests (IP code) to EN 60529 (excluding IPX9)
  • Glow-wire tests to EN 60695-2-11
  • Needle flame tests to EN 60695-11-5
  • Ball pressure tests to EN 60695-10-2
  • Leakage current (tracking index) tests to EN 60112
  • High-voltage test to EN 60335-1, EN 60745-1 and EN 62841-1
  • Discharge current tracking to EN 60335-1, EN 60745-1 and EN 62841-1
  • Bending fatigue testing to EN 60335-1, EN 60745-1 and EN 62841-1
  • Fully equipped electric lab for general tests and measurements
  • Temperature change and climate tests
  • UV resistance tests
  • Tensile strength tests
  • Ammonium resistance tests


Thomas Olt  • Tel.: +49 (0)69/24 788-653
Urs Wothke • Tel.: +49 (0)69/24