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    77 Products

    Probe Styli

    Our most general purpose probe styli, these Renishaw styli are used with both touch-trigger and scanning probes. When these styli touch your workpiece, they trigger your probe to send a signal and measure geometric features. The ball end is made of ruby, which is second only to diamond in hardness, so it won’t lose its shape or wear over time. It’s completely round and smooth to avoid touching your workpiece at more than one precise point, preventing inaccurate measurements. However, these probe styli don’t work well with aluminum or cast iron surfaces. Aluminum can rub off onto the ruby, and cast iron and ruby are prone to scratching each other during scanning jobs.
    As a rule of thumb, you should choose a stylus with the shortest length and largest ball-end diameter that works for your application. If a stylus is too long, it’s more likely to move farther than it should, reducing measurement accuracy. Larger ball ends reduce the possibility that the stem will accidentally touch your workpiece and interfere with the reading.
    Ruby Ball-End Styli
    Image of Product. Front orientation. Contains Annotated. Probe Styli. Ruby Ball-End Styli.
    M2 Mounting Thread and M3 Mounting Thread—Styli with M2 or M3 threads are often used in coordinate measuring machines (CMMs).
    M4 Mounting Thread—Styli with M4 threads are often used on CNC machine tool probes.
    Tungsten Carbide Stem—Tungsten carbide stems are the stiffest and least likely to flex. Tungsten carbide can slightly expand in changing temperatures, so if you need precise measurements, use these styli in temperature-controlled environments.
    Ceramic Stem—Ceramic stems shatter in a collision instead of bending, minimizing impact to your probe and workpiece.
    Carbon Fiber Stem—Carbon fiber stems are the most lightweight option, so they’re often found on longer styli.
    Material
    Ball
    End Dia.,
    mm
    Effective
    Working Lg., mm
    Overall
    Lg., mm
    Stem Dia.,
    mm
    Stem
    Body
    End Dia. Tolerance,
    mm
    Precision
    Grade
    Sphericity Tolerance,
    mm
    Mfr.
    Mfr. Model
    No.
    Each
    M2 × 0.4 mm
    0.32100.2Tungsten CarbideStainless Steel
    -0.00025 to 0.0002510-0.00025 to 0.00025RenishawA-5000-78000000000000000000
    0.32200.2Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5004-73980000000000000
    0.53100.4Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-780500000000000000
    0.57200.3Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-1345000000000000000
    0.74100.5Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-780100000000000000
    0.712200.5Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-0577000000000000000
    14.5100.7Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-780600000000000000
    17200.7Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-780800000000000000
    112.5200.8Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-003300000000000000
    120.527.50.7Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-866300000000000000
    1.54.5100.7Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-7802000000000000
    1.512.5201Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-003400000000000000
    1.522.5301Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-003500000000000000
    26101Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-780700000000000000
    214201Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-382200000000000000
    214201.4Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-360300000000000000
    222.5301.5Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-003600000000000000
    232.5401.5Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-003700000000000000
    2.56.5101Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-7803000000000000
    2.516.4201.4Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-7804000000000000
    2.532.740.22Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-0039000000000000
    37101.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-3604000000000000
    317201.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-416000000000000000
    347502CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-006400000000000000
    410101.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-4154000000000000
    420201.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-416100000000000000
    450502CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-006500000000000000
    520202.5Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-0046000000000000
    530302.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-4779000000000000
    550502.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-0066000000000000
    610102.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-4156000000000000
    630302.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-4780000000000000
    650502.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-0470000000000000
    811112.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-4158000000000000
     
    M3 × 0.5 mm
    14210.7Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-355100000000000000
    1.522.5301Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-005100000000000000
    29.6211.4Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-355200000000000000
    232.5401.5Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-005300000000000000
    314.7211.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-355300000000000000
    1075754Carbon FiberStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-70570000000000000
    121001004Carbon FiberStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-74450000000000000
     
    M4 × 0.7 mm
    14.519.50.7Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-754500000000000000
    28.9191.4Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-754700000000000000
    240501.5Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-479700000000000000
    338.5502Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-368000000000000000
    413.7183Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-7551000000000000
    433.5503CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-0233000000000000
    516203Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-673100000000000000
    526303Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-635200000000000000
    558.5753.8CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-0236000000000000
    583.21004.5Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-752200000000000000
    583.51003.8CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-97610000000000000
    633.4504.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-370900000000000000
    638.5504.5Carbon FiberStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-73060000000000000
    688.51004.4Carbon FiberStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-6510000000000000000
    688.51004.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-3712000000000000000
    688.51004.5Carbon FiberStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-1358000000000000000
    61351504.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-8156000000000000000
    6188.52004.5Carbon FiberStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-65120000000000000
    850504.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-77950000000000000
    81001004.5CeramicStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-7796000000000000000
    83003004.4Carbon FiberStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-34610000000000000
     
    Ruby Ball/Star-End Styli
    Image of Product. 4 Styli. Front orientation. Contains Annotated. Probe Styli. Ruby Ball/Star-End Styli, 4 Number of Styli.
    Image of Product. 5 Styli. Front orientation. Contains Annotated. Probe Styli. Ruby Ball/Star-End Styli, 5 Number of Styli.

    4 Styli

    5 Styli

    Ball/star styli combine up to 5 styli in one, so you can reach more of your workpiece at once. This means you won’t have to swap out styli as many times during a job. They are commonly used to inspect bores, shoulders, and grooves.
    M2 Mounting Thread and M3 Mounting Thread—Styli with M2 or M3 threads are often used in coordinate measuring machines (CMMs).
    Tungsten Carbide Stem—Tungsten carbide stems are the stiffest and least likely to flex. Tungsten carbide can slightly expand in changing temperatures, so if you need precise measurements, use these styli in temperature-controlled environments.
    Material
    Ball
    No. of
    Styli
    End Dia.,
    mm
    Effective
    Working Lg., mm
    Overall
    Lg., mm
    Overall
    Wd., mm
    Stem Dia.,
    mm
    Stem
    Body
    End Dia. Tolerance,
    mm
    Precision
    Grade
    Sphericity Tolerance,
    mm
    Mfr.
    Mfr. Model
    No.
    Each
    M2 × 0.4 mm
    412.53100.7Tungsten CarbideStainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-781100000000000000
    521219.3181.4Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-76290000000000000
    521219.3301.4Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-36260000000000000
     
    M3 × 0.5 mm
    521221.5301.4Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5003-00760000000000000
     

    Probe Styli Kits

    Image of Product. Front orientation. Probe Styli. Probe Styli Kits.
    Keep a variety of common Renishaw stylus sizes, extensions, and tools on hand. When styli touch a workpiece, they trigger your probe to send a signal and measure geometric features.
    Make sure the thread size of the styli in the kit you choose fits your application.
    These kits all include ruby ball styli, which can be used in a wide variety of applications, from touch-trigger to scanning probes. Ruby is second only to diamond in hardness, so the ball end won’t lose its shape or wear over time. It’s completely round and smooth to avoid touching your workpiece at more than one precise point, preventing inaccurate measurements. However, these probe styli don’t work well with aluminum or cast iron surfaces. Aluminum can rub off onto the ruby, and cast iron and ruby are prone to scratching each other during scanning jobs.
    As a rule of thumb, you should use a stylus with the shortest length and largest ball-end diameter that works for your application. If a stylus is too long, it’s more likely to move farther than it should, reducing measurement accuracy. Larger ball ends minimize the risk that the stem will accidentally touch your workpiece and interfere with the reading.
    All kits come with stylus installation tools, which give you a handle to turn so it’s easier to thread a stylus into your probe. Slide them into the hole at the top of your probe stylus. The included stylus extensions are useful if you need to reach deep or difficult-to-access areas.
    EWL (effective working length) is measured from the beginning of the stem to the center of the ball or disc end.
    M2 Mounting Thread and M3 Mounting Thread—Styli with M2 or M3 threads are often used in coordinate measuring machines (CMMs).
    M4 Mounting Thread—Styli with M4 threads are often used on CNC machine tool probes.
    Two 12 mm Lg. Break Stems—Break stems are designed to snap if your probe applies too much pressure on a workpiece, shielding the probe from damage.
    One 35 mm Dia. × 5 mm Thick. High-Carbon Steel Disc Stylus—Disc styli fit in undercuts and grooves within bores that are too narrow for ball styli. However, because the stylus end is flat, they can’t measure in as many directions as ball styli. Use them with both touch-trigger and scanning probes.
    No. of
    Pieces
    Includes
    Container
    Type
    Body Material
    Mfr.
    Mfr. Model
    No.
    Each
    M2 × 0.4 mm
     
    Ruby End
    12One 0.5 mm Dia. Ruby Ball Stylus with Tungsten Carbide Stem—10 mm O'all Lg. (3 mm EWL)
    One 1 mm Dia. Ruby Ball Stylus with Stainless Steel Stem—10 mm O'all Lg. (4.5 mm EWL)
    Two 1 mm Dia. Ruby Ball Styli with Tungsten Carbide Stem—20 mm O'all Lg. (12.5 mm EWL)
    Two 2 mm Dia. Ruby Ball Styli with Stainless Steel Stem—20 mm O'all Lg. (14 mm EWL)
    One 3 mm Dia. Ruby Ball Stylus with Stainless Steel Stem—20 mm O'all Lg. (17 mm EWL)
    One 4 mm Dia. Ruby Ball Stylus with Stainless Steel Stem—20 mm O'all Lg. (20 mm EWL)
    One 10 mm Lg. Stylus Extension
    One 20 mm Lg. Stylus Extension
    Two Stylus Installation Tools
    Plastic CaseStainless Steel
    RenishawA-5004-513100000000000000
     
    M3 × 0.5 mm
     
    High-Carbon Steel End, Ruby End
    10One 1 mm Dia. Ruby Ball Stylus with Stainless Steel Stem—21 mm O'all Lg. (4 mm EWL)
    One 2 mm Dia. Ruby Ball Stylus with Tungsten Carbide Stem—40 mm O'all Lg. (32.5 mm EWL)
    One 3 mm Dia. Ruby Ball Stylus with Tungsten Carbide Stem—50 mm O'all Lg. (43.7 mm EWL)
    One 4 mm Dia. Ruby Ball Stylus with Tungsten Carbide Stem—40 mm O'all Lg. (36 mm EWL)
    One 5 mm Dia. Ruby Ball Stylus with Stainless Steel Stem—21 mm O'all Lg. (21 mm EWL)
    One 5 mm Dia. Ruby Ball Stylus with Ceramic Stem—50 mm O'all Lg. (50 mm EWL)
    One 35 mm Dia. × 5 mm Thick. High-Carbon Steel Disc Stylus
    One 50 mm Lg. Stylus Extension
    Two Stylus Installation Tools
    Plastic CaseStainless Steel
    RenishawA-5004-68800000000000000
     
    M4 × 0.7 mm
     
    Ruby End
    13One 1 mm Dia. Ruby Ball Stylus with Stainless Steel Stem—19.5 mm O'all Lg. (4.5 mm EWL)
    One 2 mm Dia. Ruby Ball Stylus with Stainless Steel Stem—19 mm O'all Lg. (8.9 mm EWL)
    Two 6 mm Dia. Ruby Ball Styli with Ceramic Stem—50 mm O'all Lg. (33.4 mm EWL)
    Two 6 mm Dia. Ruby Ball Styli with Ceramic Stem—100 mm O'all Lg. (88.5 mm EWL)
    Two 30 mm Lg. Stylus Extensions
    Two 12 mm Lg. Break Stems
    Two Stylus Installation Tools
    One Wrench
    Plastic CaseStainless Steel
    RenishawA-5004-51320000000000000
     

    Contact Points for Plunger Variance Indicators

    These contact points are compatible with indicators that conform to AGD standards. Most plunger indicators are classified in AGD Groups 0, 1, 2, 3, or 4.
    Ball Contact Points
    Image of Product. Front orientation. Contains Annotated. Variance Indicator Contact Points. Contact Points for Plunger Variance Indicators, Ball Contact Points.
    Ball contact points are for measuring indentations. They can also be used to measure flat surfaces.
    Dia.,
    mm
    Lg.
    Precision
    Ball Grade
    Sphericity Tolerance
    Mounting Thread
    Size
    Body Material
    For Dial Indicator Size
    Each
    Ruby
    31/4"25-0.000025" to 0.000025"4-48
    Stainless Steel
    AGD Group 0, AGD Group 1, AGD Group 2, AGD Group 3, AGD Group 4
    0000000000000
    31/4"25-0.000025" to 0.000025"M2.5 × 0.45 mmStainless Steel
    AGD Group 0, AGD Group 1, AGD Group 2, AGD Group 3, AGD Group 4
    000000000000
    31/2"25-0.000025" to 0.000025"4-48
    Stainless Steel
    AGD Group 0, AGD Group 1, AGD Group 2, AGD Group 3, AGD Group 4
    000000000000
    41/4"25-0.000025" to 0.000025"4-48
    Stainless Steel
    AGD Group 0, AGD Group 1, AGD Group 2, AGD Group 3, AGD Group 4
    000000000000
    41/2"25-0.000025" to 0.000025"4-48
    Stainless Steel
    AGD Group 0, AGD Group 1, AGD Group 2, AGD Group 3, AGD Group 4
    000000000000
    43/4"25-0.000025" to 0.000025"4-48
    Stainless Steel
    AGD Group 0, AGD Group 1, AGD Group 2, AGD Group 3, AGD Group 4
    000000000000
     

    Probe Styli for Thin Materials

    Measure holes and edges on sheet metal and other thin materials. The straight edges on these cylindrical styli maintain stable contact with thin materials better than the curved edges on a ball styli. However, they’re not as precise as ball styli. When they touch a workpiece, they trigger your coordinate measuring machine (CMM) probe to send a signal and measure geometric features. They’re often used with touch-trigger probes.
    As a rule of thumb, you should use a stylus with the shortest length that works for your application. If a stylus is too long, it’s more likely to move farther than it should, reducing measurement accuracy.
    Ruby Cylindrical-End Styli
    Image of Product. Top orientation. Contains Annotated. Probe Styli. Probe Styli for Thin Materials, Ruby Cylindrical-End Styli, Round Tip.

    Round Tip

    Ruby ends are the most common because of how smooth, hard, and durable they are. Ruby is second in hardness only to diamond, so these styli won’t wear or lose their shape, which could lead to measurement errors. However, ruby doesn’t work well with aluminum or cast iron surfaces. Aluminum can rub off onto the ruby, and cast iron and ruby are prone to scratching each other during scanning jobs.
    Round Tip—Probe styli with a round tip allow you to probe with the stylus end as if it were a ball stylus. The round end avoids touching your workpiece at more than one precise point, so they can detect small variations in flatness.
    Material
    Ball
    End Dia.,
    mm
    Effective
    Working Lg., mm
    Overall
    Lg., mm
    Stem Dia.,
    mm
    Stem
    Body
    End Dia. Tolerance,
    mm
    Precision
    Grade
    Sphericity Tolerance,
    mm
    Mfr.
    Mfr. Model
    No.
    Each
    M2 × 0.4 mm
     
    Round Tip
    18151Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-88760000000000000000
    27.221.21.6Stainless Steel
    Stainless Steel
    -0.00013 to 0.000135-0.00013 to 0.00013RenishawA-5000-7812000000000000000
     
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