keytrond
Precision Bronze Bushings

Precision Bronze Sleeve

Sliding bearing bushing with machined oil groove, bored to H7 for press fit into housings.

Tolerance
Bore H7, OD h6, wall ±0.03 mm
Lead time
Sample 4-6 days, batch 8-12 days
Glass MachineryWoodworking MachineryGeneral Automation
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Technical parameters

Machining parameters for this part

Values below are the standard range keytrond holds for this part family. Tighter requirements are reviewed against the drawing before quotation.

Precision Bronze Sleeve technical parameters
Tolerance rangeBore H7, OD h6, wall ±0.03 mm
Surface roughnessRa 0.8 bore
Common materialsZCuSn10P1, ZCuSn6Zn6Pb3, ZCuAl10Fe3, C93200
Surface treatmentPrecision boring, Grinding, Oil groove milling
Machining processesCNC Turning, CNC Milling, Grinding
Max machining sizeØ10 - Ø260 mm, length up to 400 mm
Applicable industriesGlass Machinery, Woodworking Machinery, General Automation
Minimum order5 pcs for sample, 100 pcs for batch
Lead timeSample 4-6 days, batch 8-12 days
Drawing requirementPlease specify bore and OD tolerance, oil groove pattern, groove depth and mating shaft diameter.
Machining points

Process measures behind the tolerance

  1. 01Wall thickness kept uniformOD and bore are turned in one setup, holding wall thickness variation within 0.03 mm to avoid eccentric wear.
  2. 02Groove pattern by programFigure-8, spiral or straight grooves are cut by CNC program, with depth checked by profile gauge.
Inspection

Inspection items and methods

Inspection itemBore diameter
Method and instrumentBore gauge, H7
Inspection itemWall thickness
Method and instrumentUltrasonic or caliper at four points
Inspection itemGroove depth
Method and instrumentDepth micrometer

A first article inspection report with dimensional results, material certificate and heat treatment record is provided for sample orders. Batch orders are sampled at 10 percent, with full inspection available on request.

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