R Series
Hydraulic Mill-Type Cylinder
Bore Sizes: 4″ – 16″ | Available in pressure ratings of 300 Bar (Metric), 3000 PSI and 5000 PSI


More Features, Less Maintenance, Use the R Series
Designed in response to our customers’ need for a more durable, more reliable product to reduce their replacement and maintenance costs.
Features
- Reduce design and development costs
- Extra bearing surface accommodates additional side loading
- Advanced gland design keeps the cylinder interior clean for increased seal longevity
- Custom mounts to suit any application
- Heavy duty construction with steel flanged end caps and heavy wall tubing
- 4 wrench flats on piston rod + option to accept LDT
- Extra-long heavy duty rod bushing with dual wipers
- Made-to-order stroke lengths
- High pressure rating – well above industry standards
- Wide ductile iron piston for long bearing
- Dual buffer rod seals
- Custom mounts to suit any application
- Fully backed by Cowan Dynamics’ warranty and service/support guarantee
R5
5000 psi
Bore Size: 4” to 16”
Piston Rod Diameter: 2” to 10”
R3
3000 psi
Bore Size: 4” to 16”
Piston Rod Diameter: 2” to 10”
RM
Metric Cylinder: 300 bar
Bore Size: 40mm to 200mm
Piston Rod Diameter: 22mm to 140mm
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Design and Materials


Gland Bushing
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Standard seals are suitable for water glycol or standard mineral oil; High temp seals available as an option
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PTFE – Low friction; Excellent low-pressure seal ability, long service life
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Bronze Teflon Wiper
Stainless Steel
316 Stainless Construction for corrosive applications.
Including attachments such Rod clevis and Eye brackets

In Market Example
Improving the control of the production of steel plates on a Duo rolling mill.

Select an R Series cylinder for your operation today.
You will receive a quote within just 24 hours.