Accessories Measuring wheels Description When selecting a measuring wheel the kind of material to be measured has to be taken into consideration prior to any decision on wheel surface respectively cover lining. The wheel circumference depends on the space available as well as on the size of counter or encoder. The smaller the measuring wheel, the more force required at the wheel circumference and consequently the higher the risk of slippage and incorrect measuring results. Also the width of the measuring wheel has an impact on the result. Technical data - Large measuring wheels Circumference MR512 MR542 MR552 MR562 MR592 50 cm 50 cm 50 cm 50 cm 50 cm Outer diameter 159.15 ±0.2 mm 159.15 ±0.2 mm 159.15 ±0.2 mm 159.15 ±0.2 mm 159.15 ±0.2 mm Surface profile Cross knurl smooth smooth knopped rubber knurled Surface material Aluminium Hytrel TPE-E Vulkollan PUR Nitrile NBR Hytrel TPE-E Wheel material Aluminium Plastic Aluminium Aluminium Plastic Surface hardness, approx. - 90° Shore A 94° Shore A 55° ±5° Shore A 90° Shore A Operating temperature -30...+180 °C -10...+70 °C -30...+80 °C -10...+50 °C -10...+70 °C Fastening torque/pin 3 Nm 3 Nm 3 Nm 3 Nm 3 Nm MR241 MR261 MR291 MR752 20 cm 20 cm 20 cm 20 cm 30.48 cm Outer diameter 63.66 ±0.1 mm 63.66 ±0.1 mm 63.66 ±0.1 mm 63.66 ±0.1 mm 97.02 ±0.06 mm Surface profile Cross knurl smooth knopped rubber knurled smooth Surface material Aluminium Hytrel TPE-E Nitrile NBR Hytrel TPE-E Vulkollan PUR Wheel material Aluminium Plastic Aluminium Plastic Aluminium Surface hardness, approx. - 90° Shore A 55° ±5° Shore A 90° Shore A 92° Shore A Operating temperature -30...+180 °C -10...+70 °C -10...+50 °C -10...+70 °C -30...+80 °C Fastening torque/pin 1.5 Nm 1.5 Nm 1.5 Nm 1.5 Nm 1.5 Nm Appropriate material to be measured Measuring accuracy Recommendend Surface Suitable material Hytrel grooved Plastic, painted material, paper, Cardboard, wood, metal, textiles Hytrel smooth Plastic, painted material, paper, Cardboard, wood, metal, textiles Knurled Cardboard, wood, (textiles) Knopped rubber Textiles, cloth Vulkollan smooth Plastic, painted material, paper, Cardboard, wood, metal, wire Precise measuring results of a meter counter with measuring wheel depend on: – Kind of measured material – Contact angle – Torque of counter or encoder – Feeding speed – Strain of measured material – Surface roughness – Contact pressure of material against measuring wheel – Elastictiy of measured material – Diametrical tolerance of the measuring wheel 1 www.baumer.com/motion 12/5/2016 MR211 Circumference Subject to modification in technic and design. Errors and omissions excepted. Technical data - Small measuring wheels Accessories Measuring wheels Part number - 20 cm circumference A MR241. Bore 04 ø4 mm 07 ø7 mm MR261. A 04 06 07 10 D 04 05 06 07 10 MR291. Bore ø4 mm ø6 mm ø7 mm ø10 mm MR512. Bore ø4 mm ø5 mm ø6 mm ø7 mm ø10 mm MR552. Bore ø4 mm ø5 mm ø6 mm ø7 mm ø10 mm A Bore 07 ø7 mm 10 ø10 mm MR592. 06 07 10 12 A Bore ø4 mm ø7 mm ø9,52 mm ø10 mm 06 07 10 12 MR562. Bore ø6 mm ø7 mm ø10 mm ø12 mm A Bore 07 ø7 mm 10 ø10 mm Bore ø6 mm ø7 mm ø10 mm ø12 mm Subject to modification in technic and design. Errors and omissions excepted. 04 07 09 10 D D Part number - 1 foot circumference MR752. MR542. Bore 07 ø7 mm 10 ø10 mm D 04 05 06 07 10 A 2 www.baumer.com/motion 12/5/2016 MR211. Part number - 50 cm circumference Accessories Measuring wheels Dimensions MR211 17.5 12 ø17 ø4H8 ø63.66 ±0.1 M4x6 ZN DIN 916 M4x6 DIN 916 MR261 MR752 13.5 0.1 A 0.1 A A M4 DIN913 ø12" = 304.8 mm 3.2 ø34 A A-A ±0.2 5 M5x8 DIN 916 ø22 A-A A 0.1 A 10 19 Subject to modification in technic and design. Errors and omissions excepted. ø10 H7 (ø7 H7 / ø4 H7 / ø9.52 H7) 3 www.baumer.com/motion 12/5/2016 A 19 ø92 ø97.02 ±0.06 0.200 A ø4H8 A 63.66 ±0.2 ø18 17.5 12 ø4H8 ø63.66 ±0.1 MR241, MR291 Accessories Measuring wheels Dimensions MR512 33 ø159.15 ±0.2 ø26 ø7H8 25 M5x8 DIN 916 MR542, MR592 33 ø159.15 ±0.2 Subject to modification in technic and design. Errors and omissions excepted. 8x 18 M5x8 DIN 914 4 www.baumer.com/motion 12/5/2016 ø20 100 ø7H8 24.8±0.3 Accessories Measuring wheels Dimensions MR552 33 25 ø26 ø7H8 ø159.15 ±0.1 M5x8 DIN 916 MR562 33 ø26 M5x8 DIN 916 5 www.baumer.com/motion 12/5/2016 Subject to modification in technic and design. Errors and omissions excepted. 25 ø7H8 ø159.15 ±0.2