Web orders only - FREE shipping via UPS Ground (continental US only, motor freight excluded)
 
 
 
 
 
  BRAKE PRODUCTS
62,611 part numbers: Brake Wheels & Discontinued Brake Parts
  GEMCO
14,367 part numbers: Motion Control Products
 
  GLEASON
17,958 part numbers: Cable & Hose Management Systems
  AERO-MOTIVE
3,182 part numbers: Cable & Hose Management Systems
  CUTLER-HAMMER
6,359 part numbers: Electrical Control Products
 
 
 
 
 
  STEARNS
6,742 part numbers: Motor Mounted Brakes
  HUBBELL
8,387 part numbers: Electrical Control Products
  SUPERBOLT
117 part numbers: Fastening Solutions
  TELEMOTIVE
2,497 part numbers: Radio Remote Control
  RENOLD
406 part numbers: Mechanical Power Transmission Products
 
AUTOMATIC QUANTITY DISCOUNTS
 
BPI's web orders and web site generated PDF quotations now support quantity discount of up to 10%.
 
Quotation is valid for 30 days and can be immediately converted into an order.

 
 
CREDIT TERMS CHANGES
 
  1. Any account with invoices outstanding for more than 60 days will automatically be put on a credit hold.
  2. New customer payment terms are "Credit Card" only, full pre-pay. Credit Card information needs recorded at the time of order. Terms can be re-negotiated, upon successful payment.
 
Web: www.SuperBoltDirect.com Email: sales@SuperBoltDirect.com Phone: (888) 861-8777
 
SMX Mill Motor Nuts
 

 
Superbot® Mill Motor Nuts are special jamnuts designed to fasten brake wheels, couplings, and pulleys to mill motors. They are directly interchangeable with nuts supplied by the motor manufacturers.
 
SMX Mill Motor Nuts are used to replace standard mill motor armature nuts supplied by electric motor manufacturers. SMX tensioners are available for most standard motor frame sizes. Preload matches the hub stress capacity of brake wheels and pulleys.
 
Downloads:
  •   JL-M Lubricant Safety Data Sheet
  •   SMX Series Mill Motor Nuts Specification
  •   Superbolt Alternative Removal Procedure
  •   Superbolt Tensioners Brochure
  •   SMX Mill Motor Tensioner Application Guide
 
Easy Order Shortcuts
No Part
Number
Description Image Stock
Qty
Price
Each
Qty
Ord'd
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Cart
1 SUP-SMX-175-8-W Superbolt Mill Motor Nut Assembly with a Hardened Washer 
Part SMX-175-8/W 
Item 2000222549 
1.75 Inch Thread / Body Diameter 
8 Threads Per Inch 
3/8 Inch Diameter Set Screws 
3/16 Inch Allen Bit Size 
3.625 Inch Body Diameter 
Total Thickness with Washer 1.0625 Inch 
Includes the Hardened Washer  
All Nut Assemblies come Pre-Lubed 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 09-2022 
(3LBS) H 4" L 5" W 4" Box
4 $141.15
2 SUP-SMX-802-W Superbolt Mill Motor Nut Assembly SMX  
Part SMX-802/W 
1.00 Inch Nominal Thread / Stud Diameter 
8 Threads Per Foot 
3/8 Inch Diameter Set Screws 
3/16 Inch Allen Bit 
2.34 Inch Body Diameter 
Total Thickness with Washer 0.94 Inch 
Includes the Hardened Washer 
Assembly now comes Pre-Lubed 
For 602 & 802 Mill Motors 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 08-2022 
(4LBS) H 6" L 7" W 6" Box
5 $69.06
3 SUP-SMX-803-W Superbolt Mill Motor Nut Assembly with a Hardened Washer 
Part SMX-803/W 
Item 2000197533 
1.25 Inch Nominal Thread / Stud Diameter 
8 Threads Per Inch 
3/8 Inch Diameter Set Screws 
3/16 Inch Allen Bit 
2.72 Inch Body Diameter 
Total Thickness with Washer 0.94 Inch 
Includes a tube of JL-M Lube and the Hardened Washer 
For 603, 604 & 803, 804 Mill Motors 
Normally a Stock Item @ BPI 
Ships from Stock to 2 Weeks 
Dated 12-2020 
(3LBS) H 5" L 5" W 5" Box
9 $82.62
4 SUP-SMX-804-W Superbolt Mill Motor Nut Assembly with a Hardened Wash SMX 
Part SMX2-804/W 
Item 2000222556 
1.25 Inch Nominal Thread / Stud Diameter 
8 Threads Per Inch 
3/8" Diameter Set Screws 
3/16 Inch Allen Bit 
2.72 Inch Body Diameter 
Total Thickness with Washer 0.94 Inch 
Includes a Tube of JL-M Lube and the Hardened Washer 
For 603, 604 & 803, 804 Mill Motors 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 07-2023 
(2LBS) H 4" L 5" W 4" Box
3 $89.25
5 SUP-SMX-806-W Superbolt Mill Motor Nut Assembly with a Hardened Washer 
Part SMX-806/W 
Item 2000197539 
1.50 Inch Nominal Thread / Stud Diameter 
8 Threads Per Inch 
Set Screws 
1/4 Inch Allen Bit 
3.59 Inch Body Diameter 
Total Thickness with Washer 1.00 Inch 
Includes the Hardened Washer 
Assemblies now come Pre-Lubricated 
For 606, 806 & MD102 Mill Motors 
Normally a Stock Item @ BPI 
Ships from Stock to 2 Weeks 
Dated 02-2023 
(2LBS) H 4" L 5" W 4" Box
0 $149.18
7 SUP-SMX-810-W Superbolt Mill Motor Nut Assembly  
Part SMX810/W 
Item 20001957546 
For 610 & 810 Mill Motors 
2.25 Inch Nominal Thread / Stud Diameter 
8 Threads Per Inch 
5/8 Inch Diameter Set Screws 
5/16 Inch Allen Bit 
4.47 Inch Body Diameter 
Total Thickness with Washer 1.13 Inches 
Now ships Pre-Lubricated  
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 01-2023 
(5LBS)
6 $231.63
8 SUP-SMX-812-W Superbolt Mill Motor Nut Assembly SMX 
Part SMX2-812/W 
Item 2000197550 
2.50 Inch Nominal Thread / Stud Diameter 
8 UN Threads Per Inch 
5/8 Inch Diameter Set Screws 
5/16 Inch Allen Bit 
Torque to 58 LB FT Each 
4.72 Inch Body Diameter 
Total Thickness with Washer 1.13 Inches 
Includes a Tube of JL-M Lube and the Hardened Washer G3B37 
For 612 & 812 Mill Motors 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 03-2023
0 $283.69
9 SUP-SMX-814-W Superbolt Mill Motor Nut Assembly with a Hardened Washer 
Part SMX2-814/W 
Item 2000222561 
3.00 Inch Nominal Thread / Stud Diameter 
8 UN Threads Per Inch 
Qty 8, 5/8 Inch Diameter Set Screws 
5/16 Inch Allen Bit 
Body Diameter 5.47 Inches 
Total Thickness with Washer 1.25 Inches 
Assembly is NOW PRE-LUBED 
Included the Hardened Washer 
Set Screw Torque 58 LB FT with JL-M Standard Preload 132,000 LBS 
For 614 & 814 Mill Motors  
Dated 5-2022 
(9LBS) H 4" L 5" W 4" Box
10 $375.06
10 SUP-SMX-818-W Superbolt Mill Motor Nut Assembly with a Hardened Washer 
Part SMX-818/W 
Item 2000197561 
3.50 Inch Nominal Thread / Stud Diameter 
8 Threads Per Inch 
5/8" Diameter Set Screws 
5/16" Allen Bit 
Body Diameter 6.47 Inches 
Total Thickness with Washer 1.13 Inch 
Includes a Tube of JL-M Lube and the Hardened Washer 
For 618 & 818 Mill Motors 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 12-2021 
(11LBS) H 5" L 7" W 7" Box
4 $486.54
11 SUP-SMX-820-W Superbolt Mill Motor Nut Assembly with a Hardened Washer SMX 
Part SMX-820/W 
Item 2000197565 
4.00 Inch Nominal Thread / Stud Diameter 
8 Threads Per Inch 
5/8 Inch Diameter Set Screws 
5/16 Inch Allen Bit 
Body Diameter 7.22 Inches 
Total Thickness with Washer 1.38 Inches 
Includes a Tube of JL-M Lube and the Hardened Washer 
For 620, 622 & 820, 822 Mill Motors 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 08-2020 
(14LBS) H 4" L 8" W 8" Box
3 $499.17
12 SUP-SMX-M27-W Superbolt Mill Motor Nut Assembly 
Part SMX-M27/W 
Motor Frame - 1LT3 166 
Thread Size - M27-1.5 
With Hardened Washer 
Dated 3/17
- 0 $56.22
13 SUP-SMX-M33-W Superbolt Mill Motor Nut Assembly 
Part SMX-M33/W 
Motor Frame - 1LT2 136/156 
Thread Size - M33-1.5 
With Hardened Washer
- 0 $113.22
14 SUP-MT-100-14-W Superbolt Torquenut Mechanical Tensioners MT 
Part MT-100-14 UN/W 
Item 2000190103 
Torquenut / Standard Mechanical Tensioners with Hardened Washer 
100 = 1.00 Bolt / Stud Diameter 
14 - 14 TPI - UN Thread 
With a Hardened Washer 
Ships Pre-Lubricated 
1.90 Inch O.D. 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks  
Dated 09-2023 
(3LBS) H 4" L 5" W 4" Box
6 $60.56
15 SUP-MT-100-8-W Superbolt Torquenut Mechanical Tensioner MT 
Part MT-100-8 UN/W 
Item 2000190115 
Standard Nut Style Mechanical Tensioner 
1.00 Inch Stud Diameter 
8 Threads Per Inch - UN Thread 
With a Hardened Washer 
Tensioners are now Pre-Lubed before shipment  
1.90 Inch O.D. 
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 09-2023 
(3LBS) H 4" L 5" W 4" Box
0 $60.57
16 SUP-MT-150-12-W Superbolt Torquenut MT 
Part MT-150-12 UN/W 
Item 2000190427 
Torquenut / Standard Mechanical Tensioners 
1.5 Inch Nominal Thread Diameter 
12 Threads Per Inch UN 
Features Hex-Head Jack Bolts 
With a Hardened Washer  
Pre-Lubed with a Graphite Lubricant  
Normally a Stock Item @ BPI 
Ships from Stock to 3 Weeks 
Dated 08-2023 
(3LBS) H 5" L 4" W 4" Box
18 $94.56
17 SUP-MT-300-8-W Superbolt Mechanical Tensioner MT 
Part MT-300-8/W 
Item 2000190818 
Standard Torque Nut 
3.00 Inch Nominal Thread / Stud Diameter 
8 Threads Per Inch  
Qty 12, 9/16 Inch Hex-Head Jacking Bolts 
Jack Bolt Part JB-0520 
With a Hardened Washer by 0.31 Thick 
Pre-Lubricated, Tensioner, Washer & Jack Bolts 
5.2 Inch O.D. 
Ships in 3 Weeks 
Dated 07-2022 
(9LBS) H 6" L 6" W 4" Box
0 $380.38
18 SUP-MT-350-4-W Superbolt Mechanical Tensioner MT 
Part MT-350-4-W 
MT3504W 
Item 2000190881 
Standard Torque Nut 
3.50 Inch Nominal Thread / Stud Diameter 
4 Threads Per Inch  
Qty X, X/XX Inch Hex-Head Jacking Bolts 
With a Hardened Washer by 0.XX Thick & JL-G Jack Bolt Lubricant 
X.X Inch OD 
Ships in 4 Weeks 
Dated 02-2024 
(13LBS) H 6" L 6" W 4" Box
1 $528.06
19 SUP-MT-48 Superbolt MT Standard Torque Nut 
Part MT-48 
Coarse Pitch 5 MM 
Ships in 
Dated
- 0 $139.05
20 SUP-MT-M20-2.5-W Superbolt Torquenut MT 
Torquenut / Standard Mechanical Tensioners with Hardened Washer 
20 = 20mm Diameter 
2.5 = 2.5 TPI / Threads Per Inch 
/ W = Includes a Hardened Washer & JL-G Lubricant 
37mm OD
- 0 $44.76
21 SUP-H650T-275-8-W Superbolt Nordlock MT 
Part H650T-275-8/W 
Item 2000185653 
Mechanical Tensioner with Hardened Washer 
2.75 Inch 
8 Threads per Inch 
Medium Temperature 
Application information is now required 
with all Superbolt inquiries & orders 
Ships in 25 Days 
Dated 08-2020
- 0 $470.48
Application Information Requirements
 
In line with the manufacturer's requirements, Brake Products, Inc. is now obligated to obtain the following application information, before providing any fasteners inquiries/orders:
  1. What is the application?
  2. What is the required preload or what are they currently torqueing the nuts to?
  3. What is the operating temperature?
  4. Are there any space limitations?
  5. Attach any drawing or picture of the application.
This is only the basic application information and more questions may follow depending on the application itself.
 
 
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What is a multi-jackbolt tensioner?

 
A "Superbolt" or "multi-jackbolt tensioner (MJT)" is a direct replacement for hex nuts, covered nuts, bolts, etc. They spin onto your existing bolt or stud and provide a better way to bolt up your joint. They consist of three components, shown above.
 
Click here to learn more
Superbolt Lube
 

Superbolt Lube
 
JL-M
Moly-Disulphide Based Jackbolt Lubricant: JL-M MSDS
 
JL-G
Graphite Based Jackbolt Lubricant: JL-G MSDS
 
Apply between Jackbolt Tips & Washer.
 
JL-G and JL-M Lubricant Certificate of Conformance
 
JL-G and JL-M Lubricant Shelf Life Letter
 
Nut-style tensioners

Nut-style tensioners
 
Superbolt multi-jackbolt tensioners (MJTs) replace existing hex nuts. Only hand tools are required for installation and removal of any size tensioner. Safe, accurate and economical! We have a wide range of standard series, as well as an unlimited capacity to create special designs to meet your unique needs.
Bolt-style tensioners

Bolt-style tensioners
 
Bolt style Superbolt multi-jackbolt tensioners (MJTs) replace existing studs or bolts. Ideal for applications with tapped holes, or where threading a stud into a nut would be impractical. The outside diameter is smaller than a nut type tensioner on a stud, allowing MJTs to fit into tighter areas.
Flexnuts

Flexnuts
 
Flexnuts are used in combination with Superbolt tensioners and are designed to flex out at the bottom and flex in toward the top of the nut. This distributes the bolt load along many threads, adds elasticity, and prevents stress concentrations in the first few threads.
SMX Mill Motor Nuts

SMX Mill Motor Nuts
 
SMX Mill Motor Nuts are used to replace standard mill motor armature nuts supplied by electric motor manufacturers. SMX tensioners are available for most standard motor frame sizes. Preload matches the hub stress capacity of brake wheels and pulleys.
 
This web site is owned and operated by Brake Products, Inc.
Brake Products, Inc.   16751 Hilltop Park Place
  Chagrin Falls, Ohio 44023
  Phone: (440) 543-7962
  Fax:     (440) 543-7963
  Web:   www.brakeproducts.com
  Email: sales@brakeproducts.com
  Federal ID #: 34-1473351
  CAGE Code: 1QTP8
  DUNS# 14-748-2392
  Download: Form W-9
  ACH Form: Word   /   PDF
Supplier of Industrial Brake Parts Since 1985