(03) 9464 2950 info@thyssing.com.au

CONNEX

HARDENED STEEL JAW BUSHES

CONNEX HARDENED STEEL JAW BUSHINGS

CHARACTERISTICS

CONNEX Spring Bushings are made of a high grade chrome-vanadium AISI 6150 spring steel. Thanks to the CONNEX slot design, CONNEX Spring Bushings possess the following characteristics:

  • The toothed slot produces a nearly closed contact surface in the slot area similar to a solid bushing
  • High seating capacity in the housing bore based on the CONNEX Principle
  • High wear resistance
  • Simple, economical installation and removal
  • Broader tolerance on the receiving bore
  • Reduction in fit and assembly time
  • Reduction of damaging material stresses

Special Options

CONNEX Spring 1 Bushings are available in many common sizes. However, if you need something special, we may be able to produce it. Whether it’s more precision you’re looking for, or specific groove/hole placement, we are able to accommodate almost all requests. We will work relentlessly to satisfy your specific needs when possible.

Special Features:

We offer a wide variety of special features, from OD Grease Grooves to ID Grease Grooves to specific Grease Hole placement.

CONNEX Hardened Steel Jaw Bushing Material:

Spring steel AISI 6150

Because high resistance to wear and shock loads are required in many spring bushing applications, material quality is an important consideration. That is why a high quality AISI 6150 spring steel was selected.

 

Chemical Analysis:
 

Carbon

Manganese

Chrome

Vanadium

0.48 – 0.55%

0.60 – 1.10%

0.75 – 1.20%

0.10% Min

Silicon

Phosphorus

Sulfur

0.40% Max

0.035% Max

0.040% Max

CONNEX Spring Bushings are through-hardened to a Rockwell C of 44 to 50. For special applications, the hardness may be increased or decreased depending on requirements.

Bearing Load Calculations

We recommend that the bearing load be calculated by the specific surface pressure. The projecting bearing surface is measured as illustrated. The dynamic and static pressures as indicated are valid only if the d/I ratio is between 0.6 and 1.2. For example, if d is 1 1/2 and I is 2 the d/I ratio is 0.75. Where longer bushings and shafts are used, consideration must be given to deflection and edge pressure. Under these condition, the load values would be lower.

 

Standard Values for the Specific Bearing Load of CONNEX Bushings

The values stated require that the tolerance of shaft or pivot item, hardness and correct diameter/length ratio meet the standard requirements

Maximum static surface pressure

Maximum dynamic surface pressure

Maximum surface speed

Maximum temperature without loss of strength

90,000 PSI

8,500 to 11,500 PSI

14 feet/Minute

625 degrees F

 

 

PM = Average specific surface pressure

F = Force (bearing Load)

A = Projected area (dxl)

pma = Allowable specific bearing load

Surface Protection

CONNEX Spring Bushings, manufactured from AISI 6150, are processed in a vibratory finisher after being heat treated to remove any burrs resulting from machining. They are then dipped into a proprietary rust preventative for surface protection.

Standard Sizes

Material: AISI 6150
Cold rolled with finished ends
Nominal Diameter Standard Length Range   Nominal Diameter Standard Length Range
D d Min-Max D d Min/Max
5/8 3/8 1/2 – 2 2 1 3/4 3/4 – 6
3/4 1/2 1/2 – 2 2 1 5/8 3/4 – 6
7/8 5/8 1/2 – 2 2 1 1/2 3/4 – 6
1 3/4 1/2 – 3 2 1/4 2 3/4 – 6
1 5/8 1/2 – 3 2 1/4 1 3/4 3/4 – 6
1 1/8 7/8 1/2 – 3 2 3/8 2 3/4 – 6
1 1/8 3/4 1/2 – 3 2 3/8 1 7/8 3/4 – 6
1 1/4 1 1/2 – 3 2 1/2 2 1/4 1 – 6
1 1/4 7/8 1/2 – 3 2 1/2 2 1 – 8
1 3/8 1 1/8 1/2 – 3 2 5/8 2 1/4 1 – 8
1 3/8 1 1/2 – 3 2 3/4 2 1/2 1 – 8
1 1/2 1 1/4 1/2 – 4 2 3/4 2 1/4 1 – 8
1 1/2 1 1/8 1/2 – 4 2 7/8 2 3/8 1 – 8
1 1/2 1 3/4 – 4 3 2 1/2 1 – 8
1 5/8 1 3/8 1/2 – 4 3 2 3/4 1 – 8
1 5/8 1 1/4 1/2 – 4 3 1/4 3 1 – 8
1 5/8 1 1/8 1/2 – 4 3 1/2 3 1/8 1 – 8
1 3/4 1 1/2 1/2 – 4 3 1/2 3 1 – 8
1 3/4 1 3/8 1/2 – 4 4 3 1/2 2 – 8
1 3/4 1 1/4 3/4 – 4 4 1/2 4 2 – 8
1 7/8 1 5/8 3/4 – 4 5 4 1/2 2 – 8
1 7/8 1 1/2 3/4 – 4 5 1/2 5 2 – 8
1 7/8 1 3/8 3/4 – 4

 

*Consult factory for special length requests!

**For information on tolerances, please contact the factory!

 

TYPICAL INDUSTRY APPLICATIONS

Excavator Shovel with discharge plate

CONNEX Spring Bushings, made from chrome-vanadium spring steel, are highly resistant to wear, particularly in high pivot sections. When necessary, they are easily replaced on-site.

Hydraulic Excavator Bucket

Pivot bushings of earth moving equipment are subjected to heavy loads. They must be wear resistant and easily replaced. CONNEX Spring Bushings are the solution, since they are made from wear resistant spring steel. The CONNEX design ensures a good carrying and improved seating capacity in the housing bore.

CONNEX Spring Pins are suitable for securing the bucket teeth!

Chain Conveyor

A steel bushing is needed to prevent wear for this mechanical conveyor linkage. The dry running bearing surface needs a high wear resistant steel. CONNEX Spring Bushings, produced from AISI 6150, provide the solution. Since they are replaceable, CONNEX Spring Bushings will extend the life of the chain.

Remote Controlled Coupling on Tractor

To improve the life of cast iron units, CONNEX Spring Bushings are used. When used in combination with hardened bolts, a bearing application is performed without lubrication in an abrasive surrounding. The result is an extended functional life.

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Custom Lengths Available

Custom sizes are available upon request.

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Metric and Imperial Sizes

Both Metric and Imperial sizes are available to achieve the design requirements.

Australian Stock

Thyssing keep a wide range of stock here in Australia to reduce lead time for customers.

We're here to help!

Please do not hesitate to contact us with any design enquiries. Our experienced engineers are ready to help you with any enquiries and are willing to assist you with support to make sure you get the right product for your application.

Phone

(03) 9464 2950

Address

33 Nevin Drive, Thomastown VIC 3074

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Office Hours

M-F: 9AM - 5PM

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