Whittet Higgins BLM-30 Bearhug Retaining Nut M150 x 2,0
- T M150 × 2
- D 195.1 mm
- B 32.5 mm
Genuine Whittet-Higgins product, Whittet-Higgins
- Regular price
- $548.06
- Sale price
- $548.06
- Regular price
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Quantity pricingApplied at checkout
- 20–49 5% off$520.66 ea
- 50–99 8% off$504.22 ea
- 100–199 15% off$465.85 ea
- 200–499 18% off$449.41 ea
- 500+ 25% off$411.05 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 BLM-30
$548.06
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 BLM-30 Locknut
The Whittet-Higgins BLM Series Bearlok is a metric-thread, mechanical self-locking bearing retaining device that secures bearings and power-transmission components against a shaft or spindle thread. Each unit is a three-piece assembly: a thick-walled carbon steel base nut with a longitudinally slit, internally tapered back, a hardened alloy compression ring of matching outside diameter, and hardened alloy socket head cap screws. Tightening the cap screws in a bolt-circle pattern draws the ring over the tapered nut sections, driving them radially inward for uniform 360-degree thread clamping to the center of the shaft without damaging the shaft threads. With longitudinal (Z-axis) access, infinite adjustment and preloading, and resistance to loosening from vibration, shock, and torque, the BLM Series meets and exceeds ISO 2982-2:2013(E).
Key features
- Three-piece mechanical self-locking assembly: carbon steel base nut, hardened alloy compression ring, and hardened alloy socket head cap screws
- Uniform 360-degree thread clamping to the center of the shaft; does not damage shaft threads when secured
- Longitudinal (Z-axis) access for locking and adjustment, with infinite adjustment and preloading capability
- Balanced design for high-speed applications; prevents assemblies from loosening due to vibration, shock, and torque
- Manganese phosphate coated for corrosion resistance
- Maximum operating temperature 300 degrees F
- Meets and exceeds the specifications of ISO 2982-2:2013(E)
- Manufactured in the USA and RoHS compliant
- Four socket head cap screws on sizes 02-14; eight socket head cap screws on sizes 15-40
Specifications
Whittet-Higgins BLM-30 dimensions & specifications
- PDFBLM-30 part print (opens in a new tab)
- STEP3D CAD model (opens in a new tab)
- PDFBLM series spec sheet (opens in a new tab)
Files from Whittet-Higgins. They open in a new tab.
- Type
- Bearlok locknut
- Thread T
- M150 × 2 (pitch 2 mm)
- Outside diameter (max.) D
- 195.1 mm (7.681 in)
- Face diameter (max.) F
- 170.9 mm (6.728 in)
- Width (max.) B
- 32.5 mm (1.280 in)
- Theoretical axial load
- 2,201 kN (494,805 lbf)
- Socket head cap screw
- M6
- Suggested screw torque
- 70 in-lb (7.9 N·m)
- Material
- Carbon Steel (alloy fastener)
- Country of origin
- USA
- Series
- Bearlok BLM series (metric)
- Standard
- ISO 2982-2:2013 meets and exceeds
- Weight
- 5.96 lb
- Brand
- Whittet-Higgins
- Part number
- BLM-30 also written BLM30
- UPC / EAN
- 751968133001
Use it with
Parts and tools for your BLM-30
What Whittet-Higgins pairs with the BLM-30. Tick what you need and add it with one click.
Same size, other versions
Other versions of the BLM-30
The same size in other Whittet-Higgins series: left-hand thread, stainless steel, high strength, precision or self-locking designs.
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$404.60
In stock
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Whittet-Higgins
BMM-30Whittet Higgins BMM-30 Bearhug Retaining Nut Hardened Alloy - High Strength
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$184.41
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Whittet-Higgins
KML-30Whittet Higgins KML-30 Locknut- Lefthand Metric Threads
Locknut KML series (left-handed) · left-hand thread
$879.36
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$520.45
In stock
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Whittet-Higgins
KMS-30Whittet Higgins KMS-30 Retaining Nut M150 x 2.0
Locknut KMS series (stainless)
$1,545.13
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Whittet-Higgins
NSHM-30Whittet Higgins NSHM-30 Shoelok Tangential Locking Retaining Nut
Shoelok NSHM series (metric)
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Part number explained
What every part of BLM-30 means
- BLM
- Bearlok locknut, Bearlok BLM series (metric)
- 30
- Size 30: M150 × 2 thread
Catalogs & documents
Whittet-Higgins BLM-30 catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Product document
Catalog Bearlok – BLM Series (Metric) (opens in a new tab)
PDF · AllPagesDrop pages
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Product document
Assembly Instructions (opens in a new tab)
PDF · AllPagesDrop pages
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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
BLM-30 questions & answers
What size is the Whittet-Higgins BLM-30?
The Whittet-Higgins BLM-30 is a Bearlok locknut. Thread: M150 × 2 (pitch 2 mm). Outside diameter: 195.1 mm (7.681 in). Face diameter: 170.9 mm (6.728 in). Width: 32.5 mm (1.280 in). These are Whittet-Higgins' maximum sizes from its spec sheet.
What thread does the BLM-30 fit?
The Whittet-Higgins BLM-30 fits a M150 × 2 right-hand shaft thread (pitch 2 mm).
Does the BLM-30 need a lockwasher?
No. The Whittet-Higgins BLM-30 locks itself: cap screws, tightened from the face, clamp its hardened compression ring onto the thread all the way round. It needs no lockwasher and no keyway in the shaft.
What temperature can the BLM-30 take?
Whittet-Higgins rates the Bearlok BLM series (metric) for up to 300 °F (149 °C).
What is the BLM-30 made of?
Base threaded nut: carbon steel; Compression ring: hardened alloy; Fasteners: hardened alloy.
Is there a drawing or CAD model of the BLM-30?
Yes. Whittet-Higgins publishes a part print (PDF) and a 3D CAD model (STEP) for the BLM-30. The drawing on this page is made from the same catalog dimensions.
How do I install the BLM-30?
Follow Whittet-Higgins' assembly instructions for this part (PDF).
Is this a genuine Whittet-Higgins locknut?
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 BLM-30 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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