BTA Drill Tubes

BTA drill tubes connect BTA tools (also referred to as STS, or single tube system) to the deep hole drilling machine spindle, for rigid, confident drilling. Drill tubes sizes are standardized, and engineered for a range of hole diameters.

Standard start patterns allow easy installation and interchangeability of BTA tooling and accessories. 4-start and 1-start thread connections are common across the majority of deep hole diameters, and flange connections offer a sturdy connection for large diameter drilling. Adapters are available to extend the range of diameter capacity of drill tubes, or to adapt between connection types.

Choose Connection Type:

BTA drill tube connections should coordinate with the tool or adapter.

4-Start Thread Connection

4-start threads are common in many BTA deep hole drilling setups, often for performance advantages such as resistance to “sticking”, and easier to break loose after drilling. 4-start threads also make it possible to use larger thread leads on thinner-walled tools by using a reduced thread depth.

1-Start Thread Connection

1-start, or single start thread standards are common in many BTA drilling setups, as well as with alternato methods such as skiving and roller burnishing. 1-start tools install easily, and reduce the length of the overall setup.

Flange Connection

Flange starts are standard on larger tooling setups, and use a four bolt connection with drive keys, for a sturdy connection at high torques. Using a flange start eliminates the need for large, expensive threads, reduces the overall setup length, and allows for easy tool installation and  change.

Choose BTA Drill Tubes:

BTA drill tubes come in standard sizes based on tool diameter. Length is determined by machine and workpiece specifications. Download PDF Drill Tube Chart.

Tool Diameter MinTool Diameter MaxTube ODTube IDBTA Tube Size
0.4960.5350.4330.276794
0.5350.5750.4720.315795
0.5750.6140.5120.354796
0.6140.6570.5510.354797
0.6570.6970.5910.394798
0.6970.7440.630.472799
0.7450.7870.6690.472800
0.7880.8580.7090.472801
0.8590.9480.7870.512802
0.9491.0390.8660.551803
1.041.1290.9450.63804
1.131.221.0240.669805
1.2211.3111.1020.748806
1.3121.4251.1810.787807
1.4261.5591.2990.906808
1.561.6921.4170.984809
1.6931.851.5351.102810
1.8512.0351.6931.22811
2.0362.2121.851.378812
2.2132.5592.0081.535813
2.3862.5592.2051.614813E
2.5592.6372.2051.693814
2.6382.8732.4411.89815
2.8743.1492.6772.087816
3.153.4242.9532.323817
3.4253.9363.2282.598818
3.9374.4083.7013.071819
4.4094.8814.1733.543820
4.8825.3534.6462.835821
5.3545.8265.1184.094822
5.8276.2985.5914.567823
6.2996.7676.0635.039824
6.7727.246.5355.512825
7.2447.7127.0085.984826
7.7178.1857.486.063827
8.1898.6577.9536.535828
8.6619.138.4257.008829
9.1349.6028.8987.48830
9.60610.0759.377.953831
10.07910.5479.8438.425832
10.55111.0210.3158.898833
11.02411.49210.7879.37834
11.49611.96411.269.843835
11.96812.43611.73210.315836
12.4412.90912.20410.787837
12.91313.38512.67711.26838
13.38613.85813.1511.732839
13.85814.3313.62212.205840
14.33114.80314.09412.677841
14.80315.27514.56713.15842
15.27615.74815.03913.622843
15.74816.2215.51214.094844
16.2216.69315.98414.567845
16.69317.16516.45715.039846
17.16517.63716.92915.512847
17.63818.1117.40215.984848
18.1118.58217.87416.457849
18.58319.05518.34616.929850
19.05519.52718.81917.402851
19.52820.0019.29117.874852
20.0020.47219.76418.346853
20.47220.94420.23618.819854
20.94521.41720.70919.291855
21.41721.88921.18119.764856
21.8922.36221.65420.236857
22.36222.83422.12620.709858
22.83523.30722.59821.181859
23.30723.77923.07121.654860
23.7824.25223.54322.126861
24.25224.72424.01622.598862
24.72425.19624.48823.071863
25.19725.66924.96123.543864
Tool Diameter MinTool Diameter MaxTube ODTube IDBTA Tube Size
12.613.6117794
13.614.6128795
14.615.6139796
15.616.7149797
16.717.71510798
17.718.91612799
18.9201712800
2021.81812801
21.824.12013802
24.126.42214803
26.428.72416804
28.7312617805
3133.32819806
33.336.23020807
36.239.63323808
39.6433625809
43473928810
4751.74331811
51.756.24735812
56.2655139813
60.6655641813E
65675643814
67736248815
73806853816
80877559817
871008266818
1001129478819
11212410690820
12413611872821
136148130104822
148160142116823
160171.9154128824
172183.9166140825
184195.9178152826
196207.9190154827
208219.9202166828
220231.9214178829
232243.9226190830
244255.9238202831
256267.9250214832
268279.9262226833
280291.9274238834
292303.9286250835
304315.9298262836
316327.9310274837
328339.99322286838
340351.99334298839
352363.99346310840
364375.99358322841
376387.99370334842
388399.99382346843
400411.99394358844
412423.99406370845
424435.99418382846
436447.99430394847
448459.99442406848
460471.99454418849
472483.99466430850
484495.99478442851
496507.99490454852
508519.99502466853
520531.99514478854
532543.99526490855
544555.99538502856
556567.99550514857
568579.99562526858
580591.99574538859
592603.99586550860
604615.99598562861
616627.99610574862
628639.99622586863
640651.99634598864

Add Size and Type Adapters:

Drill tube adapters expand the range of capabilities of existing tooling and machines, allowing larger drill sizes to mount onto drill tubes, or to accommodate heads with different connection types. Each adapter has two ends with typical start patterns or mounts, to increase capacity of tooling setups.

Size Adapters

Size adapters are engineered to allow a drill tube to use a wider range of drill diameters on a single tube size. These are commonly used for operations that require a BTA drilled hole, followed by a counterbore. Size adapters are most effective when drilling low strength, short chipping materials.

Type Adapters

Connection type adapters are used when the tool and drill tube both have internal, or both external threads, or non-matching connections. This allows a drill tube and tooling setup to accept a variety of drill heads from different manufacturers, and also to protect the drill tube from potential damage.

Submit Request for BTA Drill Tubes

Submit your request for BTA drill tubes, and our sales team will respond with a quote and ordering information.