H491S | H491D
Single or Double Acting Caliper Disc Brakes
- Dynamic Torque (inch/lb) 352.5 lbf per 100 psi x Braking Radius
- 9.14 sq. in. Total Friction Pad Area
- > 12-inch Disc Diameter Range
- 1500 PSI (103 Bar) Maximum Pressure
Click image to enlarge
Quick Facts - Dynamic Torque (inch/lb) = Tangential Brake Force (lbf) x Braking Radius (in.) | Braking Radius = Disc Radius - 1.31 in.
Model | Tangential Brake Force lbf. (N) / 100 PSI | Clamping Force, lbs. (N) / 100 PSI | Disc Diameter Range, in. | Bore Diameter, in. | Piston Area, in. sq. | Total Friction Pad Area, in. sq. | Maximum Pressure, PSI (Bar) |
---|---|---|---|---|---|---|---|
H491S | H491D | 352.5 (1572) | 491 (2184) | > 12 | 2.5 | 4.91 | 9.14 | 1500 (103) |
H491S (Single Acting) Series
Product # | Model # | Description | Additional Info | Disc Thick. (in.) | Fluid Type | |
---|---|---|---|---|---|---|
4251-0017 | H491SBF | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1/4 | Hydraulic Oil | |
4251-0018 | H491SBFG | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1/4 | Dot 3 Brake Fluid | |
4251-0019 | H491SEF | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1/2 | Hydraulic Oil | |
4251-0020 | H491SEFG | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1/2 | Dot 3 Brake Fluid | |
4251-0021 | H491STF | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 3/4 | Hydraulic Oil | |
4251-0022 | H491STFG | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 3/4 | Dot 3 Brake Fluid | |
4251-0023 | H491SOF | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1.0 | Hydraulic Oil | |
4251-0024 | H491SOFG | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1.0 | Dot 3 Brake Fluid | |
4251-0025 | H491SQF | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1-1/8 | Hydraulic Oil | |
4251-0026 | H491SQFG | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston | 1-1/8 | Dot 3 Brake Fluid | |
4251-0033 | H491SE | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston, Float Plates Not Included | 1/2 | Hydraulic Oil | |
4251-0034 | H491SEG | Single Acting, Floating Mount. Use Fixed Disc | Single Non-Retractable Piston, Float Plates Not Included | 1/2 | Dot 3 Brake Fluid | |
4251-0080 | H491SBRF | Single Acting, Floating Mount. Use Fixed Disc | Single Retractable Piston | 1/4 | Hydraulic Oil | |
4251-0081 | H491SLRF | Single Acting, Floating Mount. Use Fixed Disc | Single Retractable Piston | 3/8 | Hydraulic Oil | |
4251-0082 | H491SERF | Single Acting, Floating Mount. Use Fixed Disc | Single Retractable Piston | 1/2 | Hydraulic Oil | |
4251-0083 | H491SJRF | Single Acting, Floating Mount. Use Fixed Disc | Single Retractable Piston | 5/8 | Hydraulic Oil | |
4251-0084 | H491STRF | Single Acting, Floating Mount. Use Fixed Disc | Single Retractable Piston | 3/4 | Hydraulic Oil | |
4251-0085 | H491SORF | Single Acting, Floating Mount. Use Fixed Disc | Single Retractable Piston | 1.0 | Hydraulic Oil | |
4251-0086 | H491SQRF | Single Acting, Floating Mount. Use Fixed Disc | Single Retractable Piston | 1-1/8 | Hydraulic Oil |
H491D (Double Acting) Series
Product # | Model # | Description | Additional Info | Disc Thick. (in.) | Fluid Type | |
---|---|---|---|---|---|---|
4251-0000 | H491D | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | Custom | Hydraulic Oil | |
4251-0001 | H491DB | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1/4 | Hydraulic Oil | |
4251-0002 | H491DBG | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1/4 | Dot 3 Brake Fluid | |
4251-0003 | H491DE | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1/2 | Hydraulic Oil | |
4251-0004 | H491DEG | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1/2 | Dot 3 Brake Fluid | |
4251-0005 | H491DT | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 3/4 | Hydraulic Oil | |
4251-0006 | H491DTG | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 3/4 | Dot 3 Brake Fluid | |
4251-0007 | H491DO | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1.0 | Hydraulic Oil | |
4251-0008 | H491DOG | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1.0 | Dot 3 Brake Fluid | |
4251-0009 | H491DQ | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1-1/8 | Hydraulic Oil | |
4251-0010 | H491DQG | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 1-1/8 | Dot 3 Brake Fluid | |
4251-0035 | H491DL | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 3/8 | Hydraulic Oil | |
4251-0036 | H491DLG | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Non-Retractable Pistons | 3/8 | Dot 3 Brake Fluid | |
4251-0060 | H491DBR | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Retractable Pistons | 1/4 | Hydraulic Oil | |
4251-0061 | H491DLR | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Retractable Pistons | 3/8 | Hydraulic Oil | |
4251-0062 | H491DER | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Retractable Pistons | 1/2 | Hydraulic Oil | |
4251-0063 | H491DTR | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Retractable Pistons | 3/4 | Hydraulic Oil | |
4251-0064 | H491DOR | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Retractable Pistons | 1.0 | Hydraulic Oil | |
4251-0065 | H491DQR | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Retractable Pistons | 1-1/8 | Hydraulic Oil | |
4251-0066 | H491DJR | Double Acting, Fixed Mount. Use Fixed or Floating Disc | Dual Retractable Pistons | 5/8 | Hydraulic Oil |
Related Downloads
Need Something Specific?
Expecting to find something that isn't here? We'd be happy to help. Just reach out through our contact form and let us know what you need.