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HBR – Holding Brake Roller


HBR  A  D  4 8   5 0 0   4 5   Z  9  G   Q 
Brake Only
Roller
Model DC Roller Diameter Roller Length Speed Code Shaft &
Custom
Options
Material & Lagging Options Interlock Options
Model
 A  – Standard
 W  – Washdown (IP66 w/ NBR seals)
 Q  – Enhanced Washdown (IP69K w/ Viton seals)
Roller Diameter
 48  – 48.6 mm (1.9”)  50  – 50 mm (1.97”)
Roller Length (mm) – Available in 1 mm increments
Formulas for Roller Length (RL) based upon Between Frame (BF) dimension for proper clearance
For Interlocking Options  A  and  G  : RL = BF – 8 mm – Customer Required Clearance
For Interlocking Options  H  and  F : RL = BF – 35 mm – Customer Required Clearance
For most conveyor applications, Customer Required Clearance = 2 mm
Gear Ratio
 45  – 45:1 Gear Ratio for use with MDR Speed Codes 15, 20, and 25
 18  – 18:1 Gear Ratio for use with MDR Speed Codes 35, 45, and 60
 11  – 11:1 Gear Ratio for use with MDR Speed Code 75
Tube Materials and Lagging Options
 Z  – Steel, Zinc Plating, No Lagging
 A  – Stainless Tube (Standard for Models  W  and  Q )
 J  – Stainless Tube (Option for Model  A )
 B  – 3mm Black Rubber Lagging
 W  – ⅛ in. (3.18 mm) Urethane Lagging  Q  – 2 mm Grey PVC Sleeve
 K  – ⅛ in. (3.18 mm) Kastalon Orange Sleeve  Y  – Special
Interlocking Options
 A  – Plain Straight (No Interlocking)  G  – Round Grooves
 H  – Micro-V Pulley  F  – Round Groove Pulley
 Y  – Special
Shaft &/or Custom Options (Motor End / Idler End)
 Q  – Non-Threaded Hex / Spring Loaded Hex  T  – M12 Threaded Hex / M8 Female Threaded
 P  – M12 Threaded Hex / Spring Loaded Hex  Y  – Special
 F  – Non-Threaded Hex / M8 Female Threaded