PRC110H, Protorque, PRC110 H Hub (To Suit 1610 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 112
PRC110NR, Protorque, PRC110 NR Element
Metric, Nitrile Rubber, PRC Coupling Element
PRC130H, Protorque, PRC130 H Hub (To Suit 1610 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 130
PRC150B, Protorque, PRC150 RSB Hub
Metric, Cast Iron, PRC Coupling Hub, 150
PRC180B, Protorque, PRC180 RSB Hub
Metric, Cast Iron, PRC Coupling Hub, 180
PRC180H, Protorque, PRC180 H Hub (To Suit 2517 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 180
PRC180NR, Protorque, PRC180 NR Element
Metric, Nitrile Rubber, PRC Coupling Element
PRC230B, Protorque, PRC230 RSB Hub
Metric, Cast Iron, PRC Coupling Hub, 225
PRC230F, Protorque, PRC230 F Hub (To Suit 3020 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 225
PRC280B, Protorque, PRC280 RSB Hub
Metric, Cast Iron, PRC Coupling Hub, 275
PRC280F, Protorque, PRC280 F Hub (To Suit 3525 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 275
PRC280H, Protorque, PRC280 H Hub (To Suit 3525 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 275
PRC280NR, Protorque, PRC280 NR Element
Metric, Nitrile Rubber, PRC Coupling Element
PRC70B, Protorque, PRC70 RSB Hub
Metric, Cast Iron, PRC Coupling Hub, 69
PRC70F, Protorque, PRC70 F Hub (To Suit 1008 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 69
PRC70H, Protorque, PRC70 H Hub (To Suit 1008 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 69
PRC70NR, Protorque, PRC70 NR Element
Metric, Nitrile Rubber, PRC Coupling Element
PRC90B, Protorque, PRC90 RSB Hub
Metric, Cast Iron, PRC Coupling Hub, 85
PRC90F, Protorque, PRC90 F Hub (To Suit 1108 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 85
PRC90H, Protorque, PRC90 H Hub (To Suit 1108 T/L Bush)
Metric, Cast Iron, PRC Coupling Hub, 85
What are the features and benefits of HRC couplings?
HRC Couplings have a relatively high load carrying capacity and can dampen moderate shock loads and vibration. It can also accommodate incidental misalignment and is virtually maintenance-free. The HRC Coupling is available from Acorn with a pilot bore, finished bore or tapered bush, its interlocking design also makes it easy to install.
Features & Benefits of the Flex Coupling
- High speed capability
- Cost effective solution
- Relatively high load carrying capacity
- Can accommodate moderate shock loads and vibration levels as well as misalignment
- Virtually maintenance-free
- Easy to install with its interlocking design
HRC Couplings FAQs
What is an HRC coupling?
An HRC (Highly Resilient Coupling) is a flexible shaft coupling designed for general industrial applications. It typically consists of:
- Two cast iron or steel hubs
- One flexible rubber or elastomeric element
The flexible element sits between the hubs, transmitting torque while cushioning shock loads and accommodating small amounts of misalignment. This combination of rugged construction and resilience makes HRC couplings a popular choice for plant and machinery drives.
How often should the HRC insert be replaced?
The service life of an HRC insert depends on load, speed, alignment, ambient conditions and duty cycle. Regular visual inspections are recommended. Signs such as cracking, tearing, excessive hardness or deformation indicate that the insert should be replaced.