MPITZ / OFR12 Recessed H-Flange Oilless Slide Bushings
BONIU supplies MPITZ / OFR12 recessed-mount H-flange oilless slide bushings with embedded graphite solid lubricant. The design combines a cylindrical bearing sleeve, a flange with two opposite flat sides, and a projecting locating collar. Send your drawing and operating conditions to confirm the bearing dimensions, housing interface and mounting arrangement.
MPITZ / OFR12 H-Flange Oilless Slide Bushings
The product photographs show the two-flat flange outline, mounting holes and a collar projecting above the flange. Graphite plugs are visible on the cylindrical sleeve surfaces. The flange offers an installation reference and fixing location, while the sleeve provides the specified sliding guidance for the mating shaft or pin.
This range can be reviewed for guide mechanisms, tooling and machinery assemblies requiring a flanged sliding bearing with a defined housing interface. Suitability depends on load, sliding motion, shaft condition, alignment and the installation space. The photographs illustrate the construction; they do not establish standard dimensions or operating ratings.
The copper-alloy body and embedded graphite form the specified solid-lubricant bearing construction. Confirm the alloy grade, graphite formulation and working contact surfaces for the order. The gold-coloured appearance does not identify an alloy grade.
Recessed Mounting with a Two-Flat H-Flange
The H-style flange has two opposite flat sides. The projecting collar and sleeve-to-flange relationship must be matched to the intended recess, shoulder and clearance in the mating structure. Confirm which cylindrical surface locates the bearing, which face establishes the mounting datum, and how the flange is supported.
Provide the collar diameter and projection, flange thickness, width across flats and mounting-hole positions on the drawing. Check assembly access and surrounding clearances before selecting the part. Mounting holes, recesses and fastener-head positions must match the approved fixing design.
MPITZ / OFR12 is the product designation used for this range. Confirm replacement compatibility from the actual drawings and bearing specifications. For other flange geometries, browse the BONIU product catalogue.
Dimensions and Application Details for Quotation
Send a dimensioned drawing and clearly identify the mounting datum and sleeve orientation. If you provide a sample, include the mating shaft and housing requirements so the working fit can be reviewed.
| Feature | Information to provide |
|---|---|
| Bearing sleeve | Bore, sleeve outside diameter, overall length and projection on each side of the flange. |
| H-flange | Maximum flange width, width across flats, flange thickness and outline requirements. |
| Locating collar and recess | Collar diameter and height, mating recess dimensions, datum face and clearance. |
| Fixing holes | Hole quantity, position, diameter, recess details, orientation and fastener specification. |
| Material and lubrication | Copper alloy grade, graphite specification and required plugged contact surfaces. |
| Working conditions | Load, sliding direction, stroke or rotation, speed, temperature, contaminants and shaft finish. |
| Order requirements | Quantity, drawing revision, tolerances, inspection documents, packaging and destination. |
Do not infer fit tolerances or permissible loading from a model code alone. BONIU confirms the dimensions, material and inspection requirements against the agreed drawing.
Installation and Alignment
Clean and deburr the housing recess, mounting face, holes and shaft. Check the sleeve and collar dimensions against the approved drawing before assembly. Use suitable guided tooling and support the metal body without striking the graphite plugs.
Seat the bearing squarely against the specified datum and confirm that the recess does not bottom out against an unintended surface. The flange should receive the intended support without distortion. Use the specified fasteners, torque and tightening sequence, then check shaft movement and installed clearance.
“Oilless” describes the intended solid-lubricant bearing concept. Confirm whether additional lubrication, running-in or maintenance is needed for the actual service conditions. Assess contamination, heat, misalignment and wear, and do not machine the bearing surfaces or alter the graphite pattern without review.
The visible flange is an installation feature. Any separate thrust-bearing duty must be specified and assessed from the actual contact surfaces and operating requirements.
Frequently Asked Questions
What does the H-flange description mean?
For this product, it identifies a mounting flange with two opposite flat sides. Confirm its full outline and width across flats from the drawing.
What must be checked for recessed installation?
Confirm the locating collar, housing recess, flange support, datum face and projections on both sides. The intended locating surface and installation clearance should be explicit.
Does oilless mean maintenance is never needed?
No. The solid-lubricant construction still requires application review and appropriate inspection. Confirm lubrication and maintenance requirements for the actual duty.
Can MPITZ / OFR12 replace an existing guide bushing?
Send the original drawing or sample dimensions, mating shaft and housing requirements, and operating conditions. Compare material, graphite arrangement, fits and mounting details before approving a replacement.
Can you quote a different sleeve length or flange size?
Send the complete drawing, quantity and application details. BONIU will review the proposed geometry and confirm the quotation and inspection requirements.
Request an MPITZ / OFR12 Quote
Send your drawing, required quantity, housing recess details and operating conditions. BONIU will confirm the H-flange geometry, graphite-plugged bearing construction and mounting interface for your order.
H-flange clearance and recessed-pocket location
The two flat flange sides address limited lateral space beside neighbouring tooling or machine features. The projecting locating collar and the flange outline must be dimensioned independently. A visually similar H-shaped outline does not establish the same recessed mounting interface.
| Drawing review | Information for quotation |
|---|---|
| Lateral envelope | Give across-flat width, remaining curved outline and clearance to adjacent components. |
| Recessed location | Show locating collar diameter and height, housing pocket diameter and depth, and datum face. |
| Orientation | Tie the flat sides and fixing-hole coordinates to the machine’s required installation direction. |
Installation and operating boundaries
Check pocket cleanliness, corner relief and the actual locating shoulder before fastening. The design should make clear whether the collar or flange face establishes the axial datum. A collar that bottoms before the intended face seats can leave the flange unsupported. Check shaft alignment in the assembled pocket.
Include the drawing revision, quantity, required delivery destination and inspection-document requirements. Photographs show geometry; they do not establish an alloy grade, coating test result or service rating. BONIU reviews the requested specification before confirming the quotation.
Purchasing questions
Can I choose this only from the bore diameter?
No. Across-flat width, collar geometry, pocket depth, hole pattern and sleeve projection affect fit.
Are the flats automatically an anti-rotation feature?
Only if the approved housing design engages them for that purpose. Clearance flats by themselves do not define an anti-rotation capacity.
Is OFR12 equivalent to any H-flange bushing?
No. Compare the actual drawing, tolerances and material rather than relying on the outline or code.
Related selection routes
MPIZ / OFR11 Recessed Round & Cut-Edge Flange Oilless Bushings; bearing materials; automation guidance applications; Bearing fit and selection guides.
Request a drawing-based quotation
Send the interface drawing and operating details through our enquiry page. Identify the required material by its exact standard and grade; proposed alternatives require approval.