Inner Tension Bushes Type PN3000 (DIN 1498)
Inner Tension Bushes are slotted hollow cylinders with a variety of slot forms. They are manufactured from hardened and tempered spring steel strip giving elasticity and extended wear resistance. They are defined by slot type, diameters and length to our factory standard PN3000 (DIN 1498 refers).
- Easy Assembly
- No further treatment after assembly
- Rescuing expensive parts by re-boring and fitting a Bush
- Low repair costs
- Short down times
- Self locating in housing
- Manufacturing to a hardness giving maximum life
- Minimum maintenance
Pentz Inner Tension Bushes are used wherever there is exposure to heavy duty working conditions and high surface forces. They are found in applications of slowly rotating machinery, wave movement operations, assemblies with short cycle reverse rotational functions, and of course they excel when dealing with shock loads!
Such as:
- Construction machines
- Agricultural machines
- Conveying systems
- Machine building Industries
- Railway Industry
- Mining and Digging
This is type DIN 1498 standard Bush which custom and practice allows us to offer for a host of regular applications. Diameter D1 is oversize prior to fitting and the pre-tension generated allows the Bush to hold itself into position after assembly, without further mechanical constraint. The pre-tension is product of the wall thickness and Bush length.
EG
- Straight slot, the most usual form
ES
- Inclined slot, favoured
- For rotary motion
EP
- Arrow slot, again for rotary motion and longer length Bushes
Inner Tension Bushes Type PN5000 with Close Joint and Thrust Pads
With the fitting of these Pentz Bushes, the slot edges come together compressing the thrust pads and giving a higher surface loading in the housing, ensuring a more stable assembly and longer service life.
- Security against axial movement even in worn housings
- Security against torsional movement
- Bushes can be ground upon request to fine tolerances
- High retention force in housing
- Cost effective housing manufacture up to tolerance H11
- Easy assembly and removal with standard hydraulic fitment.
- Valuable to reclaim worn housings
- More cost effective due to longer service life
- Minimum maintenance
Pentz has developed this Bush to meet growing demand for increased service intervals together with longer working life. The close joint prevents contaminant entering the Bush and keeps the lubricant working longer. They have been tested for some years in:
- Construction machines
- Salvage operations
- Agricultural machines
- Conveying systems
- Building Industry Equipment
- Rail road Industry
EGPN / EGPNG*
Inner Tension Bush with Close Joint and Thrust Pads
- plain surface
*) Internally ground
EGPN1 / EGPNG1*
Inner Tension Bush with Close Joint and Thrust Pads
- 1 inner spiral groove, one side running-out into chamfer
*) Internally ground
EGPN2 / EGPNG2*
Inner Tension Bush with Close Joint and Thrust Pads
- To D2 90mm, 3 inner inclined grooves not running-out
- 90 mm Dia upwards 4 similar grooves
- Optionally with 1 inner annular groove
*) Internally ground
EGPN3 / EGPNG3*
Inner Tension Bush with Close Joint and Thrust Pads
- 1 outer annular groove
- 1 inner annular groove
- To D2 90mm Dia. 3 inclined grooves not running out
- From D2 90mm Dia. 4 similar grooves
- 3 or 4 drilled holes
*) Internally ground
EGPN4 / EGPNG4*
Inner Tension Bush with Close Joint and Thrust Pads
- 1 outer groove
- 1 inner groove
- 2 holes through
*) Internally ground
EGPN5 / EGPNG5*
Inner Tension Bush with Close Joint and Thrust Pads
- To D2 90mm, Dia. 3 inner inclined grooves running-out to chamfer
- From D2 90mm Dia. 4 grooves similar
*) Internally ground
Inner Tension Bushes with Closed Joint PN7000
Where extremely high retention forces are required from a Bush then the Pentz type PN7000 with its Closed Joint will rise to this exacting task. Upon assembly the slot edges come together and exert increasing pressure upon the walls of the housing.
- No loss of lubricant
- Extra security in housing
- Bushes can be ground upon request offering closer tolerances
- Reduced life costs
- Increased maintenance periods
- Production times as standard Bushes
- Easy assembly and removal with standard hydraulic fitment
- Patented design
Pentz Inner Tension Bushes of this type have been developed to satisfy the need for better performance in the more exacting environments. Fields of application are:
- All the usual machinery previously referred to
- Plus applications where service life is an extra consideration
- Plus e.g. hazardous applications where Bush may not be accessible as often as may be preferred
Due to the closed joint of this Bush even shock loadings are more easily dealt with. The Bushes are through hardened and tempered giving all the advantages of a solid Bush together with self retention, press-in forces are agreed with the customer prior to delivery. All Pentz variations of lubrication grooves and through holes are available on this Bush type also.
EGP / EGPG*
Inner Tension with closed joint
- plain sufrace
*) Internally ground
EGP1 / EGPG1*
Inner Tension with closed joint
- 1 inner spiral groove, one side running-out into chamfer
*)Internally ground
EGP2 / EGPG2*
Inner Tension with closed joint
- To D2 90mm, 3 inner inclined grooves not running-out
- 90mm Dia upwards 4 similar grooves
- Optionally with 1 inner annular groove
*) Internally ground
EGP3 / EGPG3*
Inner Tension with closed joint
- 1 outer annular groove
- 1 inner annular groove
- To D2 90mm Dia. 3 inclined grooves not running out
- From D2 90mm Dia. 4 similar grooves
- 3 or 4 drilled holes
*) Internally ground
EGP4 / EGPG4*
Inner Tension with closed joint
- 1 outer groove
- 1 inner groove
- 2 holes through
*)Internally ground
EGP5 / EGPG5*
Inner Tension with closed joint
- To D2 90mm, Dia. 3 inner inclined grooves running-out to chamfer
- From D2 90mm Dia. 4 grooves similar
*) Internally ground
