Parts database: Mechanical engineering

This page lists 62 typical spare and wear parts from mechanical engineering plants, sorted into 7 groups. Each card briefly explains what the part is and what it does.

The list shows examples, not a fixed range: we also source parts that are not listed here. “Request” copies the part name straight into the request form, where you add manufacturer and part number.

Parts by group

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Bearings and seals
Rolling bearing
Bearing in which balls or rollers roll between two rings and guide shafts with low friction.
Request: Rolling bearing Read more in the knowledge base: Rolling bearing
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Bearings and seals
Deep groove ball bearing
Versatile ball bearing for radial and moderate axial loads.
Request: Deep groove ball bearing
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Bearings and seals
Spherical roller bearing
Bearing for heavy loads that compensates shaft misalignment.
Request: Spherical roller bearing
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Bearings and seals
Cylindrical roller bearing
Bearing with cylindrical rollers for high radial loads.
Request: Cylindrical roller bearing
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Bearings and seals
Tapered roller bearing
Bearing for combined radial and axial loads, usually fitted in pairs.
Request: Tapered roller bearing
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Bearings and seals
Plummer block unit
Housing with bearing bolted to a frame to carry a shaft.
Request: Plummer block unit
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Bearings and seals
Support and cam follower
Bearing with a thick outer ring that runs directly on a track or cam.
Request: Support and cam follower
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Bearings and seals
Plain bearing bush
Bush made of bronze, plastic or composite for slow or oscillating movements.
Request: Plain bearing bush
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Bearings and seals
Rotary shaft seal
Seal ring that keeps oil in the housing and dirt away from the rotating shaft.
Request: Rotary shaft seal
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Bearings and seals
O-ring
Round sealing ring for static and simple dynamic sealing.
Request: O-ring
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Bearings and seals
Bearing grease
Lubricating grease for rolling bearings; grade depends on speed, load and temperature.
Request: Bearing grease
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Gearboxes and couplings
Geared motor
Electric motor with flanged gearbox that reduces speed and increases torque.
Request: Geared motor
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Gearboxes and couplings
Helical gearbox
Gearbox with parallel shafts and high efficiency.
Request: Helical gearbox
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Gearboxes and couplings
Bevel gearbox
Gearbox that turns the rotary motion through 90 degrees.
Request: Bevel gearbox
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Gearboxes and couplings
Worm gearbox
Right-angle gearbox with a high ratio in one stage; often self-locking.
Request: Worm gearbox
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Gearboxes and couplings
Planetary gearbox
Compact gearbox for high torques, for example on servo motors.
Request: Planetary gearbox
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Gearboxes and couplings
Gear to drawing
Spur, bevel or worm gear manufactured to sample or drawing.
Request: Gear to drawing
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Gearboxes and couplings
Flexible coupling
Coupling with elastomer element that damps shocks and compensates misalignment.
Request: Flexible coupling
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Gearboxes and couplings
Coupling spider
Elastomer spider of the jaw coupling; a wear part.
Request: Coupling spider
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Gearboxes and couplings
Slip clutch
Clutch that slips on overload and protects the drive.
Request: Slip clutch
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Gearboxes and couplings
Roller chain and sprocket
Chain drive for positive power transmission over longer distances.
Request: Roller chain and sprocket
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Gearboxes and couplings
Pulley
Pulley for V-, flat or timing belts; fixed to the shaft with a taper bush.
Request: Pulley
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Linear motion
Profile rail guide
Rail with carriage for precise, rigid linear motion.
Request: Profile rail guide
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Linear motion
Carriage
Carriage of the profile rail with recirculating balls or rollers.
Request: Carriage
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Linear motion
Ball screw
Screw with nut that converts rotation into precise linear motion via recirculating balls.
Request: Ball screw
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Linear motion
Ball nut
Nut of the ball screw; replaced when play or wear occurs.
Request: Ball nut
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Linear motion
Screw support bearing
Angular contact bearing unit that fixes the screw axially.
Request: Screw support bearing
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Linear motion
Rack and pinion
Drive for long travel distances, for example on gantries.
Request: Rack and pinion
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Linear motion
Linear axis
Ready-made axis with guide, drive and slide.
Request: Linear axis
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Linear motion
Bellows cover
Cover that protects guides and screws from chips and dust.
Request: Bellows cover
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Hydraulics
Hydraulic cylinder
Cylinder that converts oil pressure into linear force and motion.
Request: Hydraulic cylinder Read more in the knowledge base: Hydraulic cylinder
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Hydraulics
Piston rod
Hard-chromed rod of the cylinder; scoring damages the seals.
Request: Piston rod
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Hydraulics
Seal kit
All seals and guide rings of a cylinder as a kit.
Request: Seal kit
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Hydraulics
Directional valve
Valve that directs the oil flow to the consumers.
Request: Directional valve
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Hydraulics
Pressure relief valve
Valve that limits system pressure and protects components.
Request: Pressure relief valve
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Hydraulics
Gear pump
Simple, robust pump for hydraulic power units.
Request: Gear pump
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Hydraulics
Hydraulic power unit
Unit consisting of tank, pump, motor, filter and valves.
Request: Hydraulic power unit
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Hydraulics
Hydraulic hose
Hose assembly with crimped fittings for moving connections.
Request: Hydraulic hose
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Hydraulics
Tube fitting
Bite-type or flare fitting for connecting hydraulic tubes.
Request: Tube fitting
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Pneumatics
Pneumatic cylinder
Cylinder that performs fast stroke and positioning movements with compressed air.
Request: Pneumatic cylinder
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Pneumatics
Air preparation unit
Combination of filter, pressure regulator and possibly lubricator ahead of the pneumatics.
Request: Air preparation unit
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Pneumatics
Pneumatic directional valve
Valve that switches compressed air to cylinders and grippers.
Request: Pneumatic directional valve
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Pneumatics
Flow control valve
Valve used to set the speed of a cylinder.
Request: Flow control valve
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Pneumatics
Push-in fitting
Fitting into which the air hose is simply pushed.
Request: Push-in fitting
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Pneumatics
Pneumatic tubing
Plastic tubing for compressed-air lines in machines.
Request: Pneumatic tubing
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Pneumatics
Silencer
Insert on the exhaust port that reduces exhaust noise.
Request: Silencer
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Machine tools
Machining centre
CNC machine that mills, drills and taps workpieces with changing tools.
Request: Machining centre
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Machine tools
Motor spindle
Spindle with integrated motor that drives the tool at high speed.
Request: Motor spindle
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Machine tools
Tool holder
Taper holder in which cutters and drills are clamped in the spindle.
Request: Tool holder
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Machine tools
Collet
Slotted sleeve that clamps tools or workpieces concentrically.
Request: Collet
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Machine tools
Machine vice
Workholding device that holds workpieces on the machine table.
Request: Machine vice
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Machine tools
Coolant pump
Pump that delivers coolant to the cutting zone.
Request: Coolant pump
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Machine tools
Chip conveyor
Conveyor that removes chips from the working area.
Request: Chip conveyor
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Machine tools
Linear scale
Glass scale with reading head that records the axis position precisely.
Request: Linear scale
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Standard parts
Screws and bolts
Hexagon, socket and countersunk screws to DIN/ISO in various strength classes.
Request: Screws and bolts
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Standard parts
Nuts and washers
Hexagon, locking and slotted nuts together with washers.
Request: Nuts and washers
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Standard parts
Parallel key
Positive-locking element that connects hubs to shafts.
Request: Parallel key
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Standard parts
Retaining ring
Ring that secures bearings or components axially on shafts or in bores.
Request: Retaining ring
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Standard parts
Dowel and spring pin
Pin that aligns or fixes components to each other.
Request: Dowel and spring pin
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Standard parts
Grease nipple
Fitting through which grease is pressed into bearings and guides.
Request: Grease nipple
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Standard parts
Gas spring
Gas-filled spring that holds or lifts flaps and covers.
Request: Gas spring
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Standard parts
Levelling foot
Height-adjustable, often vibration-damping foot for levelling machines.
Request: Levelling foot

Part not listed?

Send us the nameplate, a drawing or a parts list. We check the sourcing and get back to you.