MM Series – Housed Spring Loaded Ball Transfer Units

MM Series Medium Duty
MM Series Diagram Medium Duty
Switch measurements:
Part Load (lb)Load (kg) Deflection LOAD AT MAX DEFLECTION lbLOAD AT MAX DEFLECTION kg BALL ⌀ ″Ball Ø (mm) A B C D E$ fromFile icon FilesAdd to Cart
MM22 154 70 0.177 4.5 198 90 7/8" 22 1.535 39 2.283 58 1.969 50 0.551 14 2.106 53.5 $186.42PDF Step
MM30 298 135 0.276 7 375 170 1 3/16" 30 1.909 48.5 2.756 70 2.441 62 0.689 17.5 2.480 63 $305.66PDF Step
MM45 507 230 0.413 10.5 639 290 1 3/4" 45 2.618 66.5 3.957 100.5 3.346 85 1.004 25.5 3.543 90 $296.08PDF Step
MM22A 154 70 0.177 4.5 198 90 7/8" 22 1.535 39 2.283 58 1.969 50 0.551 14 2.106 53.5 $276.74PDF Step
MM30A 298 135 0.276 7 375 170 1 3/16" 30 1.909 48.5 2.756 70 2.441 62 0.689 17.5 2.480 63 $225.22PDF Step
MM45A 507 230 0.413 10.5 639 290 1 3/4" 45 2.618 66.5 3.957 100.5 3.346 85 1.004 25.5 3.543 90 $338.13PDF Step
MM22SS Inquire Inquire 0.177 4.5 198 90 7/8" 22 1.535 39 2.283 58 1.969 50 0.551 14 2.106 53.5 -
MM30SS Inquire Inquire 0.276 7 375 170 1 3/16" 30 1.909 48.5 2.756 70 2.441 62 0.689 17.5 2.480 63 -
MM45SS Inquire Inquire 0.413 10.5 639 290 1 3/4" 45 2.618 66.5 3.957 100.5 3.346 85 1.004 25.5 3.543 90 -

MM Series Medium Duty ball transfer units are machined from solid steel & case hardened for wear resistance. Reinforced machined steel top cap protects against impact from misalignment of the conveyed item. Lubricated for life & zinc plated for resistance to corrosion.

Standard materials; Body & cap AISI 1015, Balls AISI 52100. Stainless steel upgrade ‘A’ & ‘SS’ feature AISI420 balls Shock Resistance & body. Main ball sizes ≥19mm incorporate a felt seal to restrict contamination.

This series features a single drain hole.

Low Friction Low Friction
1 : 0,002
Speed Speed
1.5m/sec
Temperature Temperature
-30/+100ºC
Shock Resistence Shock Resistence
Orientation Horizontal / Up

Orientation Horizontal / Up


Tolerance Rings

  • Compensate for irregularities in bore & diameter.
  • Ideal where only single-sided access of mounting surface is reachable.
Medium Duty Part Bore Ø MIN / MAX A B$ fromFile icon FilesAdd to Cart
MM22 TR36 1.488 - 1.496 37.8 - 38 1.417 36 0.472 12 $1.84
MM30 TR45 1.843 - 1.850 46.8 - 47 1.772 45 0.591 15 $1.92
MM45 TR60 2.445 - 2.453 62.1 - 62.3 2.362 60 0.787 20 $2.22
transfer ball unit tolerance ring

Similar Heavy Duty models:

  • Maximum capacity at any angles of orientation.
  • Heavy duty precision machined construction.
  • “Endless track” design – smoothest precision.
  • Service kits & factory spares since 1954.
2 year warranty logo
Subject to usage & conditions.

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