Engineering drawing: rotationally symmetrical components (TZ 200.61)

Engineering drawing: rotationally symmetrical components (TZ 200.61)

consists of drilling jig and workpiece

Code TZ200.61


  • Reading and understanding complex engineering drawings are core skills.
  • They are at least equivalent to drawing ability itself, and are the aim of this GUNT
  • The use of concrete applications and real-world workpieces and standard parts is intended to develop engineering communication skills.
  • The actual drawing tasks are developed from a larger technological environment.
  • TZ 200.61provides an introduction to the graphical representation of rotationally symmetrical components and the representation of sections.
  • The central element is a drilling jig that can be used, in this case, to drill into a bearing cap.
  • A quarter has been cut out of the base of the drilling jig.
  • This illustrates the concepts of “section” and “half-section”.
  • The cut-out quarter is also provided on the base plate, so that the difficult topic of sectional views can be demonstrated clearly.
  • All parts are clearly arranged on a base plate.
  • An exploded view, attached to the base plate, illustrates the overall arrangement.
  • The manufactured parts are precision-manufactured and therefore are also suitable for measuring exercises.
  • Ideally, the parts should be used in the classroom as an exercise.
  • Two or three students can work meaningfully with one kit.

Technical Details:


  • part of the GUNT course on engineering drawing
  • rotationally symmetrical components using the example of a practical drilling jig for machining of a workpiece (bearing cap)
  • base of the drilling jig prepared as a half section
  • all individual parts of the drilling jig precision-manufactured from aluminium
  • PVC bearing cap as workpiece
  • base plate with printed exploded drawing
  • storage system for parts
  • instructional material incorporates action-oriented and interdisciplinary forms of teaching

Dimensions & Weight:

  • L x W x H: 420x300x75mm (storage system)
  • Weight: approx. 2kg

Learning Objectives/Experiments:

  • introduction to graphical representation of rotationally symmetrical components
  • familiarisation with sectional views: full section and half section
  • dimensioning of rotating parts and threads
  • production engineering aspects:
  • devices as aids for drilling and reaming
  • complete machining on modern tooling machines
  • tolerances, fits, surface specifications
  • classification of the workpiece (bearing cap) in a larger technological context

Scope of Delivery:

  • 1 base plate with the individual parts of the drilling jig
  • 1 workpiece (bearing cap)
  • 1 set of standard parts (drill bush, pin, O-ring)
  • 1 set of instructional material


  • GUNT course: engineering drawing
  • introduction to sectional views


Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.