C93200 Oil-Grooved Bushings for Baler Pickup Pivots
Request C93200 oil-grooved replacement bushings for the pivot supporting a baler pickup assembly’s height movement. This enquiry is for a lubricated oscillating support, separate from the rotating pickup reel bearings. Provide the pivot arrangement and maintenance access so the sleeve, grease route and debris protection can be assessed as one assembly.
Retain grease access through the moving pickup bracket
Pickup movement can reverse over a short arc while the machine vibrates and encounters uneven crop or ground conditions. State the support force, angular travel, linkage geometry and any impact events. Show which member rotates and how the pin is retained. The grease passage must connect to the required contact zone after fitting, with its entry kept accessible at the intended service position.
C93200 is a high-leaded tin bronze in the Copper Development Association’s alloy classification. Use the exact UNS grade and casting/product standard for the quotation. It is distinct from a plain brass sleeve and from a graphite-plugged JDB construction. Its material family does not remove the need for planned lubrication. The groove shape must be approved for the actual feed arrangement; a spiral is an example, not a mandatory pattern for every pickup pivot.
Protect the pin and bearing from crop debris and grit
Describe dust, chaff, water and grit exposure, and include seal or cap details. Neither a new alloy nor a deeper groove compensates for a missing seal or an oval bracket bore. Measure the pin for scoring, taper and lost diameter before deciding to reuse it. State any lead-related purchasing restrictions. Do not treat this sleeve as suitable for crop-contact or food-contact service without a separate requirement review.
Drawing and quotation checklist
Send a dimensioned new-part drawing with units and revision, the mating assembly and the following application details.
| Review item | Information to provide |
|---|---|
| Sleeve and bracket | Bore, OD, length, bracket support width, housing condition and retention. |
| Grease connections | Inlet location, hole diameter, groove section/endpoints, grease type and service access. |
| Pin and seals | Pin material/hardness/finish, new-part diameter, seal seats and protective caps. |
| Pickup duty | Load direction, angular movement, vibration, impacts, operating environment and maintenance interval. |
| Purchase specification | C93200 and casting standard, drawing revision, quantity and acceptance requirements. |
Installation and selection checks
Restore the housing and pin to their approved geometry before fitting the sleeve. Align the grease feed and keep passages free from burrs. Verify installed clearance with the retained pin, then move the pickup through its full adjustment arc. Confirm that grease reaches the intended interface and that seals remain seated throughout movement. Use the machine maker’s inspection schedule for initial service checks.
Frequently asked questions
Can the original grease groove be changed to a helix?
Submit both the existing and proposed layouts. Groove direction, contact area and outlet paths must be reviewed for the oscillating assembly before changing the drawing.
Is a worn pin acceptable if the new bushing fits tightly?
A tight fit on one part of a tapered or scored pin can still leave poor contact elsewhere. Compare the complete pin geometry and finish with the approved specification.
Is C93200 the same as graphite bronze?
No. C93200 identifies an alloy. Graphite plugging is a separate construction feature and is not included merely because the sleeve is bronze.
Request a drawing-based quotation
Send the drawing, C93200 high-leaded tin bronze specification, quantity and operating details through Contact BONIU. Include any required material documentation and inspection criteria. Material route, manufacturing feasibility and delivery are confirmed in the quotation.