Superfine Balanced Locknuts

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)

  • Hardness:HRC48° ~52°

  • Thread Precision:ISO 4H

  • Parallelism: 0.002mm

  • Edge Bevel:0.002mm

  • Concentricity:0.005mm

 
 
SBL-A SBL-A
Thread D h d UxV C F mxn MAX Nm Loosening Torque Nm
SBL-A
M20x1
38 16 33 ø4.3x3 13 5 M5x6 4.5 28.9
SBL-A
M20x1.5
M6x6 8.0
SBL-A
M25x1.5
18 16 30.4
SBL-A
M30x1.5
45 40 19 32.4
SBL-A
M35x1.5
52 47 22 M8x6 18.0 39.2
SBL-A
M40x1.5
58 20 52 25 46.1
SBL-A
M45x1.5
65 59 28 61.8
SBL-A
M50x1.5
70 64 30 70.6
SBL-A
M55x2
75 22 68 33 88.2
SBL-A
M60x2
80 73 ø5.3x3 35 6 98.0
SBL-A
M65x2
85 78 38 127.5
SBL-A
M70x2
92 24 84 41 147.1
SBL-A
M75x2
98 90 43 152.0
SBL-A
M80x2
105 96 46 156.9
SBL-A
M85x2
110 102 ø6.4x3 49 7 176.5
SBL-A
M90x2
120 26 108 53 186.3
SBL-A
M95x2
125 113 55 201.0
SBL-A
M100x2
130 118 58 220.6
SBL-A
M105x2
140 28 125 61 M10x6 35.0 236.3
SBL-A
M110x2
145 132 64 252.0
SBL-A
M115x2
150 137 66 268.1
SBL-A
M120x2
155 30 142 69 279.4
SBL-A
M125x2
160 147 71 289.2
SBL-A
M130x2
165 152 74 313.7
SBL-A
M135x2
175 32 160 78 352.9
SBL-A
M140x2
180 165 80 392.2
SBL-A
M145x2
190 175 84 436.3
SBL-A
M150x2
195 180 86 480.4
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
SBL-B
M20x1
38 16 33 M4x6 13 10 M5x3 4.5 28.9
SBL-B
M20x1.5
M6x3 8.0
SBL-B
M25x1.5
18 16 12 30.4
SBL-B
M30x1.5
45 40 M5x9 19 32.4
SBL-B
M35x1.5
52 47 22 M8x3 18.0 39.2
SBL-B
M40x1.5
58 20 52 M6x9 25 14 46.1
SBL-B
M45x1.5
65 59 28 61.8
SBL-B
M50x1.5
70 64 M6x
12
30 M8x6 70.6
SBL-B
M55x2
75 22 68 33 16 88.2
SBL-B
M60x2
80 73 35 98.0
SBL-B
M65x2
85 78 38 127.5
SBL-B
M70x2
92 24 84 M8x
12
41 18 147.1
SBL-B
M75x2
98 90 43 152.0
SBL-B
M80x2
105 96 46 156.9
SBL-B
M85x2
110 102 49 176.5
SBL-B
M90x2
120 26 108 53 20 186.3
SBL-B
M95x2
125 113 55 201.0
SBL-B
M100x2
130 118 58 220.6
SBL-B
M105x2
140 28 125 61 22 M10x6 35.0 236.3
SBL-B
M110x2
145 132 64 252.0
SBL-B
M115x2
150 137 66 268.1
SBL-B
M120x2
155 30 142 69 24 279.4
SBL-B
M125x2
160 147 71 289.2
SBL-B
M130x2
165 152 74 313.7
SBL-B
M135x2
175 32 160 78 26 352.9
SBL-B
M140x2
180 165 80 392.2
SBL-B
M145x2
190 175 84 436.3
SBL-B
M150x2
195 180 86 480.4
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.

More
  • Material Composition:SCM440(42CrMo4)

  • Hardness:HRC48° ~52°

  • Thread Precision:ISO 4H

  • Parallelism: 0.002mm

  • Edge Bevel:0.002mm

  • Concentricity:0.005mm

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

More
  • Material Composition:SCM440(42CrMo4)

  • Hardness:HRC48° ~52°

  • Thread Precision:ISO 4H

  • Parallelism: 0.002mm

  • Edge Bevel:0.002mm

  • Concentricity:0.005mm

 
 
SBL-D SBL-D
Thread D h d UxV C F mxn MAX Nm Loosening Torque Nm
SBL-D
M20x1
32 10 27 M4x6 13 5 M5x3 4.5 24.0
SBL-D
M20x1.5
SBL-D
M25x1.5
38 12 33 16 6 M6x3 8.0 26.5
SBL-D
M30x1.5
45 40 M5x9 19 28.4
SBL-D
M35x1.5
52 47 22 34.3
SBL-D
M40x1.5
58 14 52 M6x9 25 8 36.3
SBL-D
M45x1.5
65 59 28 56.9
SBL-D
M50x1.5
70 64 M6x
12
30 M8x6 18.0 63.7
SBL-D
M55x2
75 16 68 33 10 68.6
SBL-D
M60x2
80 73 35 96.1
SBL-D
M65x2
85 78 38 112.7
SBL-D
M70x2
92 18 84 M8x
12
41 12 137.3
SBL-D
M75x2
98 90 43 145.1
SBL-D
M80x2
105 96 46 149.0
SBL-D
M85x2
110 102 49 168.6
SBL-D
M90x2
120 20 108 53 14 178.4
SBL-D
M95x2
125 113 55 193.1
SBL-D
M100x2
130 118 58 210.8
SBL-D
M105x2
140 22 125 61 16 215.7
SBL-D
M110x2
145 132 64 230.4
SBL-D
M115x2
150 137 66 250.0
SBL-D
M120x2
155 24 142 69 18 264.7
SBL-D
M125x2
160 147 71 274.5
SBL-D
M130x2
165 152 74 294.1
SBL-D
M135x2
175 26 160 78 20 M10x6 35.0 328.4
SBL-D
M140x2
180 165 80 372.5
SBL-D
M145x2
190 175 84 402.0
SBL-D
M150x2
195 180 86 421.6
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
SBL-E
M20x1
32 10 27 M5x6 5 3 M5x3 4.5 24.0
SBL-E
M20x1.5
SBL-E
M25x1.5
38 12 33 6 M6x3 8.0 26.5
SBL-E
M30x1.5
45 40 4 28.4
SBL-E
M35x1.5
52 47 M5x9 34.3
SBL-E
M40x1.5
58 14 52 M6x9 7 5 36.3
SBL-E
M45x1.5
65 59 6 56.9
SBL-E
M50x1.5
70 64 M6x
12
M8x6 18.0 63.7
SBL-E
M55x2
75 16 68 8 68.6
SBL-E
M60x2
80 73 96.1
SBL-E
M65x2
85 78 112.7
SBL-E
M70x2
92 18 84 M8x
12
9 137.3
SBL-E
M75x2
98 90 145.1
SBL-E
M80x2
105 96 8 149.0
SBL-E
M85x2
110 102 168.6
SBL-E
M90x2
120 20 108 10 9 178.4
SBL-E
M95x2
125 113 193.1
SBL-E
M100x2
130 118 210.8
SBL-E
M105x2
140 22 125 11 11 215.7
SBL-E
M110x2
145 132 230.4
SBL-E
M115x2
150 137 250.0
SBL-E
M120x2
155 24 142 12 264.7
SBL-E
M125x2
160 147 274.5
SBL-E
M130x2
165 152 294.1
SBL-E
M135x2
175 26 160 13 14 M10x6 35.0 328.4
SBL-E
M140x2
180 165 372.5
SBL-E
M145x2
190 175 16 402.0
SBL-E
M150x2
195 180 421.6
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