Tensioner Devices
Rubber suspension tensioner devices configured with powder metallurgy housings, steel inner cores, and Rubmix 10 inserts operating from -40 C to +90 C.
Parts in This Category
All 3 part numbers NOWARUN documents under Tensioner Devices.
NR-B Boomerang Tensioner Device
Types NR-B tensioner devices are built for tensioning very long chain and belt drives using a boomerang configuration…
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NR-F Front Mounting Tensioner Device
Types NR-F front mounting tensioner devices provide chain and belt tensioning on frames where rear access is…
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NR Standard Tensioner Device
Types NR is a standard tensioner device manufactured with a powder metallurgy housing, a steel inner core, and Rubmix…
View specificationsProblems This Category Solves
- Long chain or belt drives sag excessively over extended center distances without sufficient tensioner travel compensation
- Machine frame designs lack rear access for tensioner mounting bolts and require direct front-side fastening into blind holes
- Standard tensioning elements fail prematurely when operating in severe outdoor temperature conditions down to -40 C
- Drivetrain assemblies experience vibration and slack when using rigid brackets lacking integrated torsional damping inserts
Who These Parts Are For
- Machine designers engineering long center-distance chain drives that require triple compensation travel geometry
- Equipment OEMs building closed-frame machinery where mechanical fasteners must thread entirely from the front face
- Procurement engineers sourcing standardized rubber torsional tensioning elements to replace catalogue parts
- Conveyor and transmission builders requiring consistent rubber compound performance across wide operating temperature spans
What You Get From NOWARUN
- Powder metallurgy housing paired with steel inner core provides structural stability under dynamic drive loads
- Rubmix 10 rubber inserts provide built-in torsional elasticity without mechanical coil spring fatigue
- Boomerang NR-B geometry delivers triple compensation travel for very long chain and belt drive setups
- NR-F models include quality 12.9 hex socket screws engineered specifically for front-only blind-hole installation
- Broad working temperature capability down to -40 C and up to +90 C depending on tensioner type
Where They Are Used
- Tensioning extended center-distance roller chains and drive belts using Boomerang NR-B triple compensation
- Mounting tensioners on fully enclosed structural tubing where bolt access is restricted to front blind holes
- Damping drive vibration on agricultural machinery operating across sub-zero and elevated outdoor temperatures
- Standard mechanical power transmission assemblies requiring maintenance-free torsional tensioning elements
Industries Using These Parts
Agriculture Equipment
Agricultural machinery operates under extreme field conditions where drive lines, belt drives and vibrating screens bear continuou
IndustryWood Processing
Wood processing machinery relies on durable cutting edges, reliable gear drives, and continuous vibration damping under heavy cycl
Tensioner Devices Questions
What materials are used in these tensioner devices?
The housing is manufactured from powder metallurgy, the inner core is made from steel, and the elastic inserts use Rubmix 10 rubber.
What is the working temperature range?
The working temperature ranges from -40 C to +80 C for standard NR and NR-B types, and -30 C to +90 C for NR-F front mounting units.
How does the NR-F type mount to machine frames?
NR-F is designed for blind-hole frames requiring fixation strictly from the front, supplied with a quality 12.9 hex socket screw.
When is the NR-B Boomerang tensioner selected?
NR-B is specified for very long chain and belt drives requiring triple compensation travel to maintain continuous drive tension.
What surface finishes are applied to the steel parts?
Steel parts are finished in Nowarun grey for NR-B types and Nowarun green painted for standard NR and NR-F types.
How are tensioner devices packaged for delivery?
Components are packed in PP bags, cartons, crates, or boxes according to customer specifications.
Get a Quote on Tensioner Devices
Send the drawing or the sample with the quantity, the material and the tolerance you need.