Product Overview
Lever bushings and ring-like door-lock components support rotation and connect it to a projecting drive feature.
The catalog reference shows several related profiles.
Structure & Mating Interfaces
Define the central fit, projection orientation and mating lock hardware.
Relate the projection to the locating axis rather than dimensioning it from a free outer edge.
Engineering Focus
Why is projection orientation important on a lever bushing?
The projection engages another member at a position set by the central fit.
Its orientation links the bushing's location to the lock action.
Controlling only the circular fit can leave that engagement relationship unspecified.
Manufacturing Route & Finishing
Compare PM, MIM and machining for the ring and projection geometry.
Working bores and contact faces may need secondary sizing or machining.
The proposed route is confirmed for your drawing, material and quantity. An image does not establish a fixed tolerance or a complete process specification.
Compare manufacturing capabilities →Materials & Surface Requirements
Specify the base material, final condition and corrosion or appearance requirements.
Mark drive, guiding and contact surfaces that must meet their dimensions after treatment.
The component specification does not establish a security rating for the complete lock.
Review material-selection information →Quality & Sample Approval
Check central fit, angular orientation and contact clearance.
Verify operation after the specified final finish or treatment.
Specify the drawing revision and the condition in which each dimension is inspected. Record the agreed dimensional and functional checks before sample approval.
Quality documentation →Prepare a Product-Specific RFQ
- Component definition. Send the 2D drawing and 3D model, where available, with the drawing revision and the requested part or assembly scope.
- Mating information. Include the assembly references needed to define the interfaces discussed above.
- Delivered condition. State material, finishing and inspection requirements, identifying any items that need a manufacturing recommendation.
- Supply plan. Include sample needs, expected order and annual quantities, packaging requirements and target timing.
Product Questions
Which datum should locate a drive projection on a lock bushing?
Use the axis and assembly reference that control the bushing in the lock, with the required angular relationship defined explicitly.
Why is projection orientation important on a lever bushing?
The projection engages another member at a position set by the central fit. Its orientation links the bushing's location to the lock action. Controlling only the circular fit can leave that engagement relationship unspecified.
How should the completed mechanism be checked?
Check central fit, angular orientation and contact clearance. Verify operation after the specified final finish or treatment.
Technical Context
The product-specific notes above identify drawing-review questions. General process and material references are collected separately; they do not verify a material grade, production qualification or performance claim for the pictured part.
Manufacturing and material references →