DIGBITS - Quality wear parts for earthmovers
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TECHNICAL RESOURCE

Boom Pins, Bushes, Seals & Shims

When components on the excavator arm are worn it becomes very difficult to dig or position attachments with accuracy. Ultimately, components failing can cause injury or death.
​
Digbits manufacture and stock tens of thousands of pins, bushes, shims, dust seals and linkages for machines from under one tonne up to over 45 tonnes. 

Damage Prevention:

Regular inspections (as detailed by your manufacturer) and use of the grease gun are vital. Expensive damage can be caused if pins or bushes are allowed to wear to the point of failure. We frequently supply new dipper-end bosses as a result of unnecessary damage caused in this way.

Removing Old Bushes:

bushes is to put a ring of weld on the inside of the bush. As the weld cools the bush will contract and shrink. It can then be tapped out gently.

Important! Never hit hardened steel bushes directly with a steel hammer – they can shatter –, use a soft metal mallet or a wooden block, and always wear eye protection.
​

Important! Never use excessive force when removing or fitting hardened steel bushes into housings. In extreme cases the bush can distort the housing, causing misalignment and permanent damage, and may also shatter.

Fitting New Bushes:

When new machines are assembled in the factory, hardened steel bushes are often ‘shrunk fit’ or ‘freeze fit’ into housings/bosses, by dipping them into liquid nitrogen, prior to fitting. If you do not have access to these facilities, chilling the bushes in an ordinary domestic freeze (wrap them up so you don’t get oil and grease on anything edible!) will serve the same purpose.
Don’t be tempted to apply heat to the housing/boss, in an attempt to expand it, as this rarely works and often (if the walls expand inwards) makes the job even harder.

Important! Never hit hardened steel bushes directly with a steel hammer – they can shatter –, use a soft metal mallet or a wooden block, and always wear eye protection.
​
Important! Never use excessive force when removing or fitting hardened steel bushes into housings. In extreme cases the bush can distort the housing, causing misalignment and permanent damage, and may also shatter.
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​Telephone: 01889 503020 or contact us  

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Crushers
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Spare parts
 - Undercarriage Parts
 - Pins, Bushes, Seals & Shims
 - Bucket & Tipping Linkages
 - Bucket Teeth
 - General Spares
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Engineering
TECHNICAL RESOURCE
- Operating
 - Maintenance & Servicing
 - Know Your Machine
 - Buckets - Buying & Using
 - Buckets - Changing & Attaching
 - Buckets - Repairs
 - Buckets - Teeth
​ - Rubber Tracks - Ground Conditions & Use
 - Rubber Tracks - Sizes
 - Rubber Tracks - Changing a Track
​ - Rubber Tracks - Tensioning
 - Undercarriage Components 
 - Boom Pins, Bushes, Seals & Shims
 - Transportation
 - Lifting
 - Hydraulic Ram Repairs
  - Hydraulic Hoses
 - Slew Ring & Pinion Problems
 - Buying your excavator
 - Contacting your excavator manufacturer or dealer
Picture
Digbits Ltd
​Power Park
Towers Business Park
Rugeley
Staffordshire
​WS15 1UZ
United Kingdom 

​Tel: 01889 503020   
Fax: 01889 503021   

Email: 
sales@digbits.co.uk
Website by Treble3
  • Home
  • Shop
  • Products
    • Buy Now
    • Excavator Buckets >
      • Digging & Trenching Buckets
      • Ditching & Grading Buckets
      • XHD Buckets
      • V Ditchers
      • Riddle Buckets
      • Clayspades
      • Taper Tile Buckets
      • Micro Trench Buckets
      • Concrete Pouring Buckets
      • Tilt Rotator Buckets
      • Bucket Teeth
    • Excavator Attachments >
      • Heavy Duty Ripper Teeth
      • Tilt Ditchers
      • Rakes
      • General Purpose Rakes
      • Grapples
      • Grip Talon
      • Rotating Grabs
      • Augers & Trenchers
      • Hedge Cutters
      • Hydraulic Hammers
      • Boom Broom
      • Block Grabs
      • Grading Beam
      • Tree Shears
      • Mulchers
      • Mechanical Pulverisors
      • Compaction Wheels
    • Crushers
    • Quick Hitches
    • Rubber Tracks >
      • Camoplast Rubber Tracks
    • Spare Parts >
      • Undercarriage Parts
      • Pins, Bushes, Seals, Shims
      • Bucket & Tipping Linkages
      • Bucket Teeth
      • Cutting Edges
      • General Spares
    • Construction Tyres
  • Technical
    • Operating
    • Maintenance & Servicing
    • Know your machine
    • Buckets - Buying and using
    • Buckets - Changing buckets & attachments
    • Buckets - Repairs
    • Buckets - Teeth
    • Rubber Tracks - Ground Conditions & Use
    • Rubber Tracks - Sizes
    • Rubber Tracks - Changing a rubber track
    • Rubber Tracks - Tensioning
    • Undercarriage Components
    • Boom Pins, Bushes, Seals & Shims
    • Transportation
    • Lifting
    • Hydraulic Ram Repairs
    • Hydraulic Hoses
    • Slew Ring & Pinion Problems
    • Buying your excavator
    • Contacting your excavator manufacturer or dealer
  • Engineering
    • Plant List
  • Used
  • News
  • About
  • Contact
    • Careers