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Superfine Balanced Locknuts

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SBL-A

SBL-A

SBL-A Precision Locknut
Lock screws intersect at a 30° angle. Superior to traditional locknuts with only 3 lock screws, the SBL-A employ 6 lock screws to the axis. Perfect mesh. Precision and balanced compression. Zero loosening under any load or speed. Inner threads, outer skirts, clamping and trailing rims are all precision ground, minimizing noise and vibration.

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  • Material Composition：SCM440(42CrMo4)

  • Thread Precision：ISO 4H

  • Parallelism：0.002mm

  • Hardness：HRC 48° ~ 52°

  • Edge Bevel：0.002mm

  • Concentricity：0.005mm

 
 
SBL-A SBL-A
Thread D h d UxV C F mxn MAX Nm Loosening Torque Nm CAD Download
SBL-A
M20x1		 38 16 33 ø4.3x3 13 5 M5x6 4.5 28.9 x_t
SBL-A
M20x1.5		 M6x6 8.0 x_t
SBL-A
M25x1.5		 18 16 30.4 x_t
SBL-A
M30x1.5		 45 40 19 32.4 x_t
SBL-A
M35x1.5		 52 47 22 M8x6 18.0 39.2 x_t
SBL-A
M40x1.5		 58 20 52 25 46.1 x_t
SBL-A
M45x1.5		 65 59 28 61.8 x_t
SBL-A
M50x1.5		 70 64 30 70.6 x_t
SBL-A
M55x2		 75 22 68 33 88.2 x_t
SBL-A
M60x2		 80 73 ø5.3x3 35 6 98.0 x_t
SBL-A
M65x2		 85 78 38 127.5 x_t
SBL-A
M70x2		 92 24 84 41 147.1 x_t
SBL-A
M75x2		 98 90 43 152.0 x_t
SBL-A
M80x2		 105 96 46 156.9 x_t
SBL-A
M85x2		 110 102 ø6.4x3 49 7 176.5 x_t
SBL-A
M90x2		 120 26 108 53 186.3 x_t
SBL-A
M95x2		 125 113 55 201.0 x_t
SBL-A
M100x2		 130 118 58 220.6 x_t
SBL-A
M105x2		 140 28 125 61 M10x6 35.0 236.3 x_t
SBL-A
M110x2		 145 132 64 252.0 x_t
SBL-A
M115x2		 150 137 66 268.1 x_t
SBL-A
M120x2		 155 30 142 69 279.4 x_t
SBL-A
M125x2		 160 147 71 289.2 x_t
SBL-A
M130x2		 165 152 74 313.7 x_t
SBL-A
M135x2		 175 32 160 78 352.9 x_t
SBL-A
M140x2		 180 165 80 392.2 x_t
SBL-A
M145x2		 190 175 84 436.3 x_t
SBL-A
M150x2		 195 180 86 480.4 x_t
SBL-B

SBL-B

SBL-B Precision Lock Nut
This design differs from the SBL-A in that there are balance adjustment screws added at the trailing surface, making for added convenience in precision adjustment. Balance adjustment screw holes can be fitted with screw-in plugs (option), eliminating high frequency noise and subsequent vibration.

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  • Material Composition：SCM440(42CrMo4)

  • Hardness：HRC48° ~52°

  • Thread Precision：ISO 4H

  • Parallelism： 0.002mm

  • Edge Bevel：0.002mm

  • Concentricity：0.005mm

 
 
SBL-B SBL-B
Thread D h d UxV C F mxn MAX Nm Loosening Torque Nm CAD Download
SBL-B
M20x1		 38 16 33 M4x6 13 10 M5x3 4.5 28.9 x_t
SBL-B
M20x1.5		 M6x3 8.0 x_t
SBL-B
M25x1.5		 18 16 12 30.4 x_t
SBL-B
M30x1.5		 45 40 M5x9 19 32.4 x_t
SBL-B
M35x1.5		 52 47 22 M8x3 18.0 39.2 x_t
SBL-B
M40x1.5		 58 20 52 M6x9 25 14 46.1 x_t
SBL-B
M45x1.5		 65 59 28 61.8 x_t
SBL-B
M50x1.5		 70 64 M6x
12		 30 M8x6 70.6 x_t
SBL-B
M55x2		 75 22 68 33 16 88.2 x_t
SBL-B
M60x2		 80 73 35 98.0 x_t
SBL-B
M65x2		 85 78 38 127.5 x_t
SBL-B
M70x2		 92 24 84 M8x
12		 41 18 147.1 x_t
SBL-B
M75x2		 98 90 43 152.0 x_t
SBL-B
M80x2		 105 96 46 156.9 x_t
SBL-B
M85x2		 110 102 49 176.5 x_t
SBL-B
M90x2		 120 26 108 53 20 186.3 x_t
SBL-B
M95x2		 125 113 55 201.0 x_t
SBL-B
M100x2		 130 118 58 220.6 x_t
SBL-B
M105x2		 140 28 125 61 22 M10x6 35.0 236.3 x_t
SBL-B
M110x2		 145 132 64 252.0 x_t
SBL-B
M115x2		 150 137 66 268.1 x_t
SBL-B
M120x2		 155 30 142 69 24 279.4 x_t
SBL-B
M125x2		 160 147 71 289.2 x_t
SBL-B
M130x2		 165 152 74 313.7 x_t
SBL-B
M135x2		 175 32 160 78 26 352.9 x_t
SBL-B
M140x2		 180 165 80 392.2 x_t
SBL-B
M145x2		 190 175 84 436.3 x_t
SBL-B
M150x2		 195 180 86 480.4 x_t
SBL-C

SBL-C

SBL-C Precision Lock Nut
The difference with this design is that the balance adjustment screws tighten from the outer skirt at a radial angle. It is the optimal choice for spindles with restricted space. Balance adjustment screw holes can be fitted with screw-in plugs (option), eliminating high frequency noise and subsequent vibration.

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SBL-A

  • Material Composition：SCM440(42CrMo4)

  • Hardness：HRC48° ~52°

  • Thread Precision：ISO 4H

  • Parallelism： 0.002mm

  • Edge Bevel：0.002mm

  • Concentricity：0.005mm

 
 
SBL-B SBL-B
Thread D h d UxV C F mxn MAX Nm Loosening Torque Nm CAD Download
SBL-C
M20x1		 38 16 33 M5x6 4 5 M5x3 4.5 28.9 x_t
SBL-C
M20x1.5		 M6x3 8.0 x_t
SBL-C
M25x1.5		 18 4.5 4 30.4 x_t
SBL-C
M30x1.5		 45 40 M5x9 5 32.4 x_t
SBL-C
M35x1.5		 52 47 M8x3 18.0 39.2 x_t
SBL-C
M40x1.5		 58 20 52 M6x9 5 46.1 x_t
SBL-C
M45x1.5		 65 59 6 61.8 x_t
SBL-C
M50x1.5		 70 64 M6x
12		 M8x6 70.6 x_t
SBL-C
M55x2		 75 22 68 5.5 88.2 x_t
SBL-C
M60x2		 80 73 98.0 x_t
SBL-C
M65x2		 85 78 127.5 x_t
SBL-C
M70x2		 92 24 84 M8x
12		 6 7 147.1 x_t
SBL-C
M75x2		 98 90 152.0 x_t
SBL-C
M80x2		 105 96 8 156.9 x_t
SBL-C
M85x2		 110 102 176.5 x_t
SBL-C
M90x2		 120 26 108 6.5 9 186.3 x_t
SBL-C
M95x2		 125 113 201.0 x_t
SBL-C
M100x2		 130 118 220.6 x_t
SBL-C
M105x2		 140 28 125 7 11 M10x6 35.0 236.3 x_t
SBL-C
M110x2		 145 132 252.0 x_t
SBL-C
M115x2		 150 137 268.1 x_t
SBL-C
M120x2		 155 30 142 7.5 279.4 x_t
SBL-C
M125x2		 160 147 289.2 x_t
SBL-C
M130x2		 165 152 313.7 x_t
SBL-C
M135x2		 175 32 160 8 14 352.9 x_t
SBL-C
M140x2		 180 165 392.2 x_t
SBL-C
M145x2		 190 175 16 436.3 x_t
SBL-C
M150x2		 195 180 480.4 x_t
SBL-D

SBL-D

SBL-D Precision Locknut
For spindles with exceptionally restricted or narrow space, this model is ideal in that it is super thin and requires no additional tooling or components to do its job. For thread sizes under M45 we offer the SBL-D with 3 lock screws, and for larger threads we offer the SBL-D with 6 lock screws. Balance adjustment screw holes can be fitted with screw-in plugs(option), eliminating high frequency noise and subsequent vibration.

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  • Material Composition：SCM440(42CrMo4)

  • Thread Precision：ISO 4H

  • Parallelism：0.002mm

  • Hardness：HRC 48° ~ 52°

  • Edge Bevel：0.002mm

  • Concentricity：0.005mm

 
 
SBL-D SBL-D
Thread D h d UxV C F mxn MAX Nm Loosening Torque Nm CAD Download
SBL-D
M20x1		 32 10 27 M4x6 13 5 M5x3 4.5 24.0 x_t
SBL-D
M20x1.5		 x_t
SBL-D
M25x1.5		 38 12 33 16 6 M6x3 8.0 26.5 x_t
SBL-D
M30x1.5		 45 40 M5x9 19 28.4 x_t
SBL-D
M35x1.5		 52 47 22 34.3 x_t
SBL-D
M40x1.5		 58 14 52 M6x9 25 8 36.3 x_t
SBL-D
M45x1.5		 65 59 28 56.9 x_t
SBL-D
M50x1.5		 70 64 M6x
12		 30 M8x6 18.0 63.7 x_t
SBL-D
M55x2		 75 16 68 33 10 68.6 x_t
SBL-D
M60x2		 80 73 35 96.1 x_t
SBL-D
M65x2		 85 78 38 112.7 x_t
SBL-D
M70x2		 92 18 84 M8x
12		 41 12 137.3 x_t
SBL-D
M75x2		 98 90 43 145.1 x_t
SBL-D
M80x2		 105 96 46 149.0 x_t
SBL-D
M85x2		 110 102 49 168.6 x_t
SBL-D
M90x2		 120 20 108 53 14 178.4 x_t
SBL-D
M95x2		 125 113 55 193.1 x_t
SBL-D
M100x2		 130 118 58 210.8 x_t
SBL-D
M105x2		 140 22 125 61 16 215.7 x_t
SBL-D
M110x2		 145 132 64 230.4 x_t
SBL-D
M115x2		 150 137 66 250.0 x_t
SBL-D
M120x2		 155 24 142 69 18 264.7 x_t
SBL-D
M125x2		 160 147 71 274.5 x_t
SBL-D
M130x2		 165 152 74 294.1 x_t
SBL-D
M135x2		 175 26 160 78 20 M10x6 35.0 328.4 x_t
SBL-D
M140x2		 180 165 80 372.5 x_t
SBL-D
M145x2		 190 175 84 402.0 x_t
SBL-D
M150x2		 195 180 86 421.6 x_t
SBL-E

SBL-E

SBL-E Precision Locknut
This model is for spindles with exceptionally restricted or narrow space, particularly where any adjustment from the trailing surface is inconvenient. Balance adjustment screw holes can be fitted with screw-in plugs(option), eliminating high frequency noise and subsequent vibration.

More

  • Material Composition：SCM440(42CrMo4)

  • Hardness：HRC48° ~52°

  • Thread Precision：ISO 4H

  • Parallelism： 0.002mm

  • Edge Bevel：0.002mm

  • Concentricity：0.005mm

 
 
SBL-E SBL-E
Thread D h d UxV C F mxn MAX Nm Loosening Torque Nm CAD Download
SBL-E
M20x1		 32 10 27 M5x6 5 3 M5x3 4.5 24.0 x_t
SBL-E
M20x1.5		 x_t
SBL-E
M25x1.5		 38 12 33 6 M6x3 8.0 26.5 x_t
SBL-E
M30x1.5		 45 40 4 28.4 x_t
SBL-E
M35x1.5		 52 47 M5x9 34.3 x_t
SBL-E
M40x1.5		 58 14 52 M6x9 7 5 36.3 x_t
SBL-E
M45x1.5		 65 59 6 56.9 x_t
SBL-E
M50x1.5		 70 64 M6x
12		 M8x6 18.0 63.7 x_t
SBL-E
M55x2		 75 16 68 8 68.6 x_t
SBL-E
M60x2		 80 73 96.1 x_t
SBL-E
M65x2		 85 78 112.7 x_t
SBL-E
M70x2		 92 18 84 M8x
12		 9 137.3 x_t
SBL-E
M75x2		 98 90 145.1 x_t
SBL-E
M80x2		 105 96 8 149.0 x_t
SBL-E
M85x2		 110 102 168.6 x_t
SBL-E
M90x2		 120 20 108 10 9 178.4 x_t
SBL-E
M95x2		 125 113 193.1 x_t
SBL-E
M100x2		 130 118 210.8 x_t
SBL-E
M105x2		 140 22 125 11 11 215.7 x_t
SBL-E
M110x2		 145 132 230.4 x_t
SBL-E
M115x2		 150 137 250.0 x_t
SBL-E
M120x2		 155 24 142 12 264.7 x_t
SBL-E
M125x2		 160 147 274.5 x_t
SBL-E
M130x2		 165 152 294.1 x_t
SBL-E
M135x2		 175 26 160 13 14 M10x6 35.0 328.4 x_t
SBL-E
M140x2		 180 165 372.5 x_t
SBL-E
M145x2		 190 175 16 402.0 x_t
SBL-E
M150x2		 195 180 421.6 x_t
Noise Elimination Screw-in Plugs

Noise Elimination Screw-in Plugs

At high speeds, the threaded holes for lock or balance screws generate high frequency noise and subsequent vibration. Our answer to the noise elimination is our screw-in plugs (option). Made of Polycarbonate Fiber, these plugs are extremely light and stable. An added benefit is the prevention of any rust build up.

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Noise Elimination Screw-in Plugs
Noise Elimination Screw-in Plugs (Option) Specifications A B C D Weight in Grams
M4 x P0.7 Ø4 2.5 1.0 0.6 0.025
M5 x P0.8 Ø5 3.0 1.0 0.6 0.045
M6 x P1 Ø6 3.0 1.0 0.6 0.075
M8 x P1.25 Ø8 3.5 1.0 0.6 0.165

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