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BRAKE PRODUCTS 48,186 part numbers: Brake Wheels & Discontinued Brake Parts   GEMCO 14,414 part numbers: Motion Control Products     GLEASON 18,097 part numbers: Cable & Hose Management Systems   AERO-MOTIVE 3,225 part numbers: Cable & Hose Management Systems             CUTLER-HAMMER 925 part numbers: Electrical Control Products   HUBBELL 8,285 part numbers: Electrical Control Products   SUPERBOLT 128 part numbers: Fastening Solutions   RENOLD 408 part numbers: Mechanical Power Transmission Products

 

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Database Lookup:     By Part Number By Description
Total 48186 part numbers listed in this database. Shown in 2410 pages by 20 items.
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Part Number	Product Category	Description	Image	Stock Qty	Weight (lbs.)	Price (US$)	Order Quantity
GRD-55-4E-2SP-WB-20	Gleason Reel Parts	Gleason Hubbell Series 55 Geared Rotary Limit Switch  Part Model 55-4E-2SP-WB-20  aka GR62653201  With Standard Cams & a Dual- L & R Hand Shaft  Gear Ratio 20.5 to 1  Contact Blocks 2  Circuits: 2NO, 2NC  Switch Type S.P.D.T.  NEMA 4 Enclosure, Water Resistant, suitable for outdoor service  Turns of Drive Shaft to Trip Contacts  Maximum 18  Minimum 1  Overtravel 2.5  Reset 0.5  Direct replacement for GE Series CR115 Model No. CR115E121122  Contact Block Specifications  15 Amp 120, 240, 480 or 600 Volt AC  1/2 H.P. 120 Volt AC  1.0 H.P. 240 Volt AC  0.8 Amp 115 Volt DC  0.4 Amp 230 Volt DC  Pilot Duty  600 Volt AC Maximum  Features:  High Strength Steel Shaft, Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1" N.P.T.  Ships in 5 Work Days, WI 53050  Dated 01-2024  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,124.37
GRD-55-4E-2SP-WB-20-LD	Gleason Reel Parts	Gleason Hubbell Series 55 Geared Rotary Limit Switch  Part Model 55-4E-2SP-WB-20-LD  aka GR62653501  With Long Dwell Cams & a Dual- L & R Hand Shaft  Gear Ratio 20.5 to 1  Contact Blocks 2  Circuits: 2NO, 2NC  Switch Type S.P.D.T.  NEMA 4 Enclosure, Water Resistant, suitable for outdoor service  Turns of Drive Shaft to Trip Contacts  Maximum 18  Minimum 1  Overtravel 2.5  Reset 0.5  Direct replacement for GE Series CR115 Model No. CR115E121122  Contact Block Specifications  15 Amp 120, 240, 480 or 600 Volt AC  1/2 H.P. 120 Volt AC  1.0 H.P. 240 Volt AC  0.8 Amp 115 Volt DC  0.4 Amp 230 Volt DC  Pilot Duty  600 Volt AC Maximum  Features:  High Strength Steel Shaft, Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1" N.P.T.  Ships in 5 Days, WI 53050  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,135.54
GRD-55-4E-2SP-WB-222	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Standard Cams, Dual shaft, P/N: 55-4E-2SP-WB-222  Gear ratio: 222 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 192, Min: 3, Overtravel: 30, Reset: 2.5;  Direct replacement for GE Series CR115 Model No. CR115E125122  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653205	-	0	0.00	1,224.21
GRD-55-4E-2SP-WB-222-LD	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Extended Dwell Cams, Dual shaft, P/N: 55-4E-2SP-WB-222-LD  Gear ratio: 222 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 182, Min: 4, Overtravel: 40, Reset: 4;  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653505	-	0	0.00	1,235.40
GRD-55-4E-2SP-WB-333	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Standard Cams, Dual shaft, P/N: 55-4E-2SP-WB-333  Gear ratio: 333 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 265, Min: 4, Overtravel: 48, Reset: 3.5;  Direct replacement for GE Series CR115 Model No. CR115E126122  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653206	-	0	0.00	1,224.21
GRD-55-4E-2SP-WB-333-LD	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Long Dwell Cams, Dual shaft  Part 55-4E-2SP-WB-333-LD  Gear ratio: 333 to 1  Contact Blocks: 2  Circuits: 2NO, 2NC  Switch Type: S.P.D.T.  NEMA 4  Turns of Drive Shaft to Trip Contacts:  Maximum 275, Minimum 5  Overtravel 58, Reset 6  Direct replacement for GE Series CR115 Model No. CR115E126122  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT  [Amazon]  (6LBS) H 4" L 8" W 5" Box[1/2018]  aka GR62653506	-	0	0.00	1,235.40
GRD-55-4E-2SP-WB-40	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Standard Cams, Dual shaft, P/N: 55-4E-2SP-WB-40  Gear ratio: 42.5 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 36.5, Min: 1, Overtravel: 6, Reset: 0.5;  Direct replacement for GE Series CR115 Model No. CR115E122122  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653202	-	0	0.00	1,124.37
GRD-55-4E-2SP-WB-40-LD	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Extended Dwell Cams, Dual shaft, P/N: 55-4E-2SP-WB-40-LD  Gear ratio: 42.5 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 35, Min: 1.5, Overtravel: 7.5, Reset: 0.75;  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653502	-	0	0.00	1,135.54
GRD-55-4E-2SP-WB-444	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Standard Cams, Dual shaft, P/N: 55-4E-2SP-WB-444  Gear ratio: 444 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 381, Min: 5, Overtravel: 63, Reset: 4.5;  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653207	-	0	0.00	1,390.66
GRD-55-4E-2SP-WB-640	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Standard Cams, Dual shaft, P/N: 55-4E-2SP-WB-640  Gear ratio: 640 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 550, Min: 8, Overtravel: 90, Reset: 7;  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653208	-	0	0.00	1,390.66
GRD-55-4E-2SP-WB-80	Gleason Reel Parts	Gleason Hubbell Geared Rotary Limit Switch 55  Part 55-4E-2SP-WB-80  554E2SPWB80  aka GR62653203  Standard Dwell Cams  Dual Shaft  Gear Ratio 80 to 1  Contact Blocks 2  Circuits 2 N.O. 2 N.C.  Switch Type S.P.D.T, Single Pole double Throw  NEMA 4 Enclosure  Turns of Drive Shaft to Trip Contacts  Maximum 68 Turns  Minimum 1.5 Turns  Overtravel 12  To Reset 0.75 Turns  Direct replacement for GE Series CR115 Part CR115E123122  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft  Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1 Inch N.P.T.  Ships in 5 Days, WI 53030  Dated 01-2023  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,124.37
GRD-55-4E-2SP-WB-80-LD	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch, Extended Dwell Cams, Dual shaft, P/N: 55-4E-2SP-WB-80-LD  Gear ratio: 80 to 1;  Contact Blocks: 2;  Circuits: 2NO, 2NC;  Switch Type: S.P.D.T.;  NEMA 4;  Turns of Drive Shaft to Trip Contacts:  Max: 66, Min: 2, Overtravel: 14, Reset: 1.25;  Contact Block Specifications:  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple;  Conduit Connection Tapped for 1.00" NPT;  (6LBS) H 4" L 8" W 5"  [Amazon][1/2018]  aka GR62653503	-	0	0.00	1,135.54
GRD-55-4E-2SP-WL-111	Gleason Reel Parts	Gleason Hubbell Geared Rotary Limit Switch 55  Part 55-4E-2SP-WL-111  554E2SPWL111  aka GR62652304  Standard Cams, Left Hand shaft  Gear Ratio: 111 to 1  Contact Blocks: 2  Circuits: 2NO, 2NC  Switch Type: S.P.D.T.  NEMA 4  Turns of Drive Shaft to Trip Contacts  Max: 97, Min: 2, Overtravel: 14, Reset: 1.25  Contact Block Specifications  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00" NPT  Ships in 6 Weeks, WI 53050  Dated 05-2025  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,134.15
GRD-55-4E-2SP-WL-111-LD	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch  Long Dwell Cams, Left Hand shaft  Gear ratio: 111 to 1  Contact Blocks: 2  Circuits: 2NO, 2NC  Switch Type: S.P.D.T.  NEMA 4  Turns of Drive Shaft to Trip Contacts  Max: 90, Min: 3, Overtravel: 21, Reset: 2.5  Contact Block Specifications  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00" NPT  LD = Long Dwell Cams  Part 55-4E-2SP-WL-111-LD  (6LBS) H 4" L 8" W 5" Box  [Amazon][1/2018]  aka GR62652904	-	0	0.00	1,051.66
GRD-55-4E-2SP-WL-1280	Gleason Reel Parts	Gleason Hubbell Geared Rotary Limit Switch  Part GRD-55-4E-2SP-WL-1280  aka GR62652309  Series 55  Standard Dwell Cams  With a Left Hand Shaft Extension  Gear Ratio 1280 to 1  Contact Blocks 2  Circuits 2 N.O. / 2 N.C.  Switch Type S.P.D.T. Single Pole Double Throw  NEMA 4 Enclosure, Water & Weather Resistant   Turns of Drive Shaft to Trip Contacts  Maximum 1095  Minimum 24  Overtravel 185  Reset 23.5  Contact Block Specifications  15 Amp 120, 240, 480 or 600 Volt AC  1/2 H.P. 120 Volt AC  1.0 H.P. 240 Volt AC  0.8 Amp 115 Volt DC  0.4 Amp 230 Volt DC  Pilot Duty 600 Volt AC Maximum  Features  High Strength Steel Shaft, Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00 Inch NPT  Direct replacement for GE Series CR115 Model CR115E129112  [Amazon] Dated 1/18  (6LBS) H 4" L 8" W 5" Box[1/2018]	-	0	0.00	1,830.11
GRD-55-4E-2SP-WL-20	Gleason Reel Parts	Gleason Hubbell Series 55 Rotary Limit Switch  Part 55-4E-2SP-WL-20  554E2SPWL20  aka GR62652301  Standard Cams  Left Hand Shaft  Gear Ratio 20.5 to 1  Contact Blocks 2  Circuits 2 N.O. - 2 N.C.  Switch Type S.P.D.T.  NEMA 4  Turns of Drive Shaft to Trip Contacts  Maximum 18  Minimum 1  Overtravel 2.5  Reset 0.5  Contact Block Specifications  15 Amp 120, 240, 480 or 600 Volts AC  1/2 H.P. 120 Volts AC  1.0 H.P. 240 Volts AC  0.8 Amp 115 Volts DC  Pilot Duty 600 Volts AC Maximum  Features:  High Strength Steel shaft, Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00" NPT  Direct replacement for GE Series CR115 Part CR115E121112  Ships in 5 Work Days, WI 53050  Dated 03-2025  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,040.50
GRD-55-4E-2SP-WL-20-LD	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch  Long Dwell Cams, Left Hand shaft  Gear ratio: 20 to 1  Contact Blocks: 2  Circuits: 2NO, 2NC  Switch Type: S.P.D.T.  NEMA 4  Turns of Drive Shaft to Trip Contacts  Max: 17, Min: 1, Overtravel: 3.25, Reset: 0.25  Contact Block Specifications  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High strength steel shaft, Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00" NPT  LD = Long Dwell Cams  Part 55-4E-2SP-WL-20-LD  aka GR62652901  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,051.66
GRD-55-4E-2SP-WL-222	Gleason Reel Parts	Gleason Hubbell Series 55 Rotary Limit Switch  Part 55-4E-2SP-WL-222  aka GR62652305  Standard Cams  Left Hand Shaft  Gear Ratio 222 to 1  Contact Blocks 2  Circuits 2 N.O., 2 N.C.  Switch Type S.P.D.T.  NEMA 4 Enclosure  Turns of Drive Shaft to Trip Contacts  Maximum 192  Minimum 3  Overtravel 30  Reset 2.5  Contact Block Specifications  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High Strength Steel Shaft  Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00" NPT  Direct replacement for GE Series CR115 Model No. CR115E125112  [Amazon] Dated 1/18  Ships in 5 days, WI 53050  (6LBS) H 4" L 8" W 5" Box	-	1	0.00	1,207.43
GRD-55-4E-2SP-WL-222-LD	Gleason Reel Parts	Gleason Series 55 Rotary Limit Switch  Part 55-4E-2SP-WL-222-LD  aka GR62652905   Extended Dwell Cams  Left Hand Shaft  Gear Ratio 222 to 1  Contact Blocks 2  Circuits 2 N.O., 2 N.C.  Switch Type S.P.D.T.  NEMA 4 Enclosure  Turns of Drive Shaft to Trip Contacts  Maximum 192  Minimum 3  Overtravel 30  Reset 2.5  Contact Block Specifications  15 Amp 120, 240, 480 or 600 VAC  1/2 H.P. 120 VAC, 1.0 H.P. 240 VAC 0.8 Amp 115 VDC, 0.4 Amp 230 VDC  Pilot Duty 600 VAC Max  Features:  High Strength Steel Shaft  Key way, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00" NPT  [Amazon] Dated 1/18  Ships in 5 days, WI 53050  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,218.58
GRD-55-4E-2SP-WL-333	Gleason Reel Parts	Gleason Hubbell Series 55 Rotary Limit Switch  Part 55-4E-2SP-WL-333  554E2SPWL333  aka GR62652306  Standard Cams, Left Hand Shaft  Gear Ratio 333 to 1  Contact Blocks 2  Circuits: 2 N.O., 2 N.C.  Switch Type: S.P.D.T.  NEMA 4 Enclosure  Turns of Drive Shaft to Trip Contacts  Maximum 265  Minimum 4  Overtravel 48  Reset 3.5  Contact Block Specifications  Honeywell Switch,CSA listed and UL recognized  15 Amp 120, 240, 480 or 600 Volt AC  1/2 H.P. 120 Volt AC  1.0 H.P. 240 Volt AC  0.8 Amp 115 Volt DC  0.4 Amp 230 Volt DC  Pilot Duty 600 Volt AC Maximum  Features:  High Strength Steel Shaft, Key & Keyway, Through Hole & Setscrew Dimple  Conduit Connection Tapped for 1.00 Inch NPT  Direct replacement for GE Series CR115 Part CR115E4126111 or 112  Ships in 20 to 25 Days, WI 53050  Dated 08-2021  (6LBS) H 4" L 8" W 5" Box	-	0	0.00	1,207.43

Prices are subject to change without notice. Last updated: 21-Aug-2025 07:05:58 AM (EST)

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: What is the application? What is the required preload or what are they currently torqueing the nuts to? What is the operating temperature? Are there any space limitations? 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.

 

Secure Online Order   Secure Online Order   128 part numbers available for online order   Shopping Cart Empty Checkout is secure   Products Available From Stock Free shipping via UPS Ground (continental US only, motor freight excluded)

Web Site Features   Part Number Lookup   Enter at least three characters of a Superbolt part number to retrive the list of all documents (such as specifications, manuals, guides, drawings, etc.) from our web site, referencing this part number:   Part Number:   Search scope: This web site only   Formal PDF Quotation   To obtain an instant formal printable PDF quotation use shopping cart and select "View PDF Quote", instead of checking out. Click here for instructions.   Your shopping cart is kept intact and you can still check out at a later time.

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.

 

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