Whittet Higgins PPM-52 Lockplate
- d 268.0 mm
- D 306.7 mm
- s 5.0 mm
Genuine Whittet-Higgins product, Whittet-Higgins
- Regular price
- $105.00
- Sale price
- $105.00
- Regular price
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Quantity pricingApplied at checkout
- 20–49 5% off$99.75 ea
- 50–99 8% off$96.60 ea
- 100–199 15% off$89.25 ea
- 200–499 18% off$86.10 ea
- 500+ 25% off$78.75 ea
Same-day shipping
Order by 3 PM ET for same-day shipping
Free shipping on orders over $100
Use code at checkout.
Whittet-Higgins PPM-52
$105.00
Why Apollo USA
Bearing locknuts and retaining parts from Apollo Industries, Oxford, Michigan
Apollo Industries supplies bearings, locknuts, lockwashers and maintenance tools to businesses across the US, with real people on the phone when you need a part matched.
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Same-day shipping
Order by 3 PM EST for same-day shipping.
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Free shipping over $100
All orders over $100 ship free by ground with code FREESHIP.
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90-day returns
Hassle-free returns on unused items within 90 days.
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Price match
Show us a competitor's advertised price on the same item and we will match it.
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Expert support
Support staff available by phone, web chat or email.
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Need tax exemption or quantity pricing?
We offer special rates for businesses and bulk orders.
Talk to a parts specialist
2695 Lake George RdOxford, MI 48370
Overview
Whittet-Higgins PPM-52 Lockplate
The Whittet-Higgins PPM-52 is a light-duty PPM-series precision locking plate (metric) that bolts to the face of a matching KM trapezoidal-thread retaining nut to secure and retain bearings and other power-transmission components on a shaft. The arc-segment steel plate is fastened with hex-head bolts and threadlocking compound, locking the assembly against vibration, shock and torque without a keyway and with no special tools required. It is engineered to function with KM-44 and larger locknuts, is made in the USA and is RoHS compliant.
Key features
- Light-duty precision locking plate engineered to function with KM-44 and larger metric trapezoidal-thread locknuts
- Bolts to the locknut face with hex-head cap screws and threadlocking compound; no keyway or special tools needed
- Reduced weight and size for space-constrained bearing-retention assemblies
- Provides numerous locking positions for accurate angular adjustment
- Resists loosening from vibration, shock-loading and torque
- Maximum plate thickness 5.0 mm across all sizes
- Meets/exceeds ANSI/AFBMA Std 8.1-1986 and ISO 2982; made in USA, RoHS compliant
- Maximum operating temperature 300°F (149°C)
Specifications
Whittet-Higgins PPM-52 dimensions & specifications
- PDFPPM-52 part print (opens in a new tab)
- STEP3D CAD model (opens in a new tab)
- PDFPPM series spec sheet (opens in a new tab)
Files from Whittet-Higgins. They open in a new tab.
- Type
- Lockplate
- Inside diameter d
- 268.0 mm (10.551 in)
- Outside diameter (max.) D
- 306.7 mm (12.075 in)
- Thickness (max.) s
- 5.0 mm (0.197 in)
- Hex head bolt
- M10 × 1.5
- Material
- Carbon steel
- Country of origin
- USA
- Series
- Lockplate PPM series (light duty)
- Weight
- 0.28 lb
- Brand
- Whittet-Higgins
- Part number
- PPM-52 also written PPM52
- UPC / EAN
- 751968595205
Part number explained
What every part of PPM-52 means
- PPM
- Lockplate, Lockplate PPM series (light duty)
- 52
- Size 52: 268.0 mm bore
Catalogs & documents
Whittet-Higgins PPM-52 catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Catalog
Whittet-Higgins Handbook of Engineering & Design (rev. 2018) (opens in a new tab)
PDF · 93.0 MB · English
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Mounting
Whittet-Higgins Assembly Instructions (opens in a new tab)
PDF · 0.2 MB · English
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Safety
Whittet-Higgins Standard Statements: Prop 65, RoHS3, REACH (opens in a new tab)
PDF · 0.1 MB · English
About the brand
About Whittet-Higgins
Bearing locknuts, lockwashers and retaining devices from Rhode Island since 1914.
Henry Whittet and John Higgins founded the Whittet-Higgins Manufacturing Company in 1914 in the basement of a mill on Congress Avenue in Providence, Rhode Island, making super-precision bearing retaining components and machined parts for local machine builders such as Brown & Sharpe.
In 1967 the company was sold to a young mechanical engineer, and in 1969 it moved to 33 Higginson Avenue in Central Falls, Rhode Island, where it still makes its products. Its first line of 66 locknuts and lockwashers has grown to more than 4,300 standard parts, made on robotic CNC systems.
Besides the standard N/AN and KM locknuts with W and MB lockwashers, Whittet-Higgins makes its own self-locking designs: Bearhug prevailing-torque locknuts, Bearlok, Shoelok and Tangentlok clamping locknuts, clampnuts and splitnuts, plus adapter sets, clamp collars and installation tools. The company is family owned and operated.
Genuine Whittet-Higgins product from an authorized retailer
Founded
1914
Headquarters
Central Falls, Rhode Island, USA
Standard parts
More than 4,300
Made in
Central Falls, Rhode Island
Known for
- Bearing locknuts and lockwashers, inch and metric
- Bearhug self-locking locknuts
- Clampnuts, splitnuts and clamp collars
- Adapter sets and installation tools
Apollo Industries is an authorized Whittet-Higgins retailer. All Whittet-Higgins trademarks and product names are the property of their respective owners.
FAQ
PPM-52 questions & answers
What size is the Whittet-Higgins PPM-52?
The Whittet-Higgins PPM-52 is a lockplate. Inside diameter: 268.0 mm (10.551 in). Outside diameter: 306.7 mm (12.075 in). Thickness: 5.0 mm (0.197 in). These are Whittet-Higgins' maximum sizes from its spec sheet.
Is there a drawing or CAD model of the PPM-52?
Yes. Whittet-Higgins publishes a part print (PDF) and a 3D CAD model (STEP) for the PPM-52. The drawing on this page is made from the same catalog dimensions.
How do I install the PPM-52?
Follow Whittet-Higgins' assembly instructions for this part (PDF).
Is this a genuine Whittet-Higgins lockplate?
Yes. Apollo Industries is an authorized Whittet-Higgins retailer, and every Whittet-Higgins part we sell is genuine, made by Whittet-Higgins in Central Falls, Rhode Island, USA.
Do you ship the PPM-52 the same day?
In-stock orders placed by 3 PM EST ship the same day. All orders over $100 ship free by ground with code FREESHIP.
Can I get quantity pricing or buy tax-exempt?
Yes. Apollo offers special rates for businesses and bulk orders. Use Request a quote on this page or call (248) 429-9073.
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