Steep Taper (MAS 403 BT) Tool Holders and Adapters

Steep Taper (MAS 403 BT) Tool Holder Blanks
Steep Taper (MAS 403 BT) Tool Holder Blanks

30, 40, and 50 steep taper MAS 403 BT blanks are available from TAC Rockford.

Details PDF (679.500)

Taper L D Part Number
Steep Taper 30 (BT)   100  45            679.530.045.100
Steep Taper 40 (BT)   160  63            679.540.063.160
Steep Taper 40 (BT)   250  63            679.540.063.250
Steep Taper 50 (BT)   160  90            679.550.090.160
Steep Taper 50 (BT)   250  90            679.550.090.250

HSK-C to Steep Taper (MAS 403 BT) Basic Adapters
HSK-C to Steep Taper (MAS 403 BT) Basic Adapters

- Includes clamping set - Includes brass locking ring - Order clamping key and draw in bolt separately

Details PDF (683.514)

MAS 403 (BT) Taper HSK-C Taper (d1) Length (l1) d2 SW Part Number
Steep Taper (BT) 40     HSK-C 40    40  63  3    683.514.040.040
Steep Taper (BT) 40     HSK-C 50    40  63  4    683.514.040.050
Steep Taper (BT) 50     HSK-C 40    50  100  3    683.514.050.040
Steep Taper (BT) 50     HSK-C 50    50  100  4    683.514.050.050
Steep Taper (BT) 50     HSK-C 63    50  100  5    683.514.050.063

BT-DC Steep Taper Tool Holder Blanks
BT-DC Steep Taper Tool Holder Blanks

40 and 50 steep taper BT Double-Contact blanks are available from TAC Rockford.

Details PDF (6F9.500)

Taper L D Part Number
Steep Taper (BT-DC) 40   160  63            6F9.540.063.160
Steep Taper (BT-DC) 40   250  63            6F9.540.063.250
Steep Taper (BT-DC) 50   160  90            6F9.550.090.160
Steep Taper (BT-DC) 50   250  90            6F9.550.090.250

Steep Taper (MAS 403 BT) to HSK-A/C Adapters
Steep Taper (MAS 403 BT) to HSK-A/C Adapters

Converts Steep Taper (MAS 403 BT) 40 and 50 to HSK-A/C 63

Details PDF (681.003.3214)

MAS 403 BT Taper (K) HSK-A/C Taper (K1) L1 Length (L±0.05) D1 Part Number
Steep Taper (BT) 40     HSK-A/C 63  43    70  63    681.00332140204
Steep Taper (BT) 50     HSK-A/C 63  22    60  63    681.00332140404

Steep Taper (MAS 403 BT) to Steep Taper (DIN 2080) Reducing Adapters
Steep Taper (MAS 403 BT) to Steep Taper (DIN 2080) Reducing Adapters

Converts Steep Taper (MAS 403 BT) to Steep Taper (DIN 2080)

Details PDF (681.003.1232)

MAS 403 BT Taper (K) DIN 2080 Taper (K1) D G Length (L) Part Number
Steep Taper (BT) 40       Steep Taper (DIN 2080) 30  50  M-12    60  681.00312320201
Steep Taper (BT) 40       Steep Taper (DIN 2080) 40  68  M-16    87  681.00312320202
Steep Taper (BT) 50       Steep Taper (DIN 2080) 40  70  M-16    63  681.00312320402

Steep Taper (MAS 403 BT) to Steep Taper (ISO) Reducing Adapters
Steep Taper (MAS 403 BT) to Steep Taper (ISO) Reducing Adapters

For tools with Steep Taper DIN 2080, DIN 69871 or MAS 403 BT.

Details PDF (681.003.1231)

MAS 403 BT Taper (K) Steep Taper (K1) D G Length (L) Part Number
Steep Taper (BT) 50     Steep Taper 40  70  M-16    51    681.00312310402

Steep Taper to Steep Taper (MAS 403 BT) Reducing Adapters
Steep Taper to Steep Taper (MAS 403 BT) Reducing Adapters

With double effect pull stud. For tools with Steep Taper (DIN 69871) or Steep Taper (MAS 403 BT).

Details PDF (681.003.1332.02)

Steep Taper (K) MAS 403 BT Taper (K1) D G Length (L) Part Number
Steep Taper 40     Steep Taper (BT) 30  50  M-12    58    681.0031332020102
Steep Taper 40     Steep Taper (BT) 40  68  M-16    85    681.0031332020202
Steep Taper 50     Steep Taper (BT) 30  55  M-12    53    681.0031332040102
Steep Taper 50     Steep Taper (BT) 40  63  M-16    63    681.0031332040202

Steep Taper (MAS 403 BT) to HSK Adapters
Steep Taper (MAS 403 BT) to HSK Adapters

Adapts from JIS B 6339 (MAS 403) BT to DIN 69063 (HSK taper).

Details PDF (678.300)

K / Spindle-Taper D1-HSK Part Number
Steep Taper (MAS 403 BT) 40       HSK-A/C 63          678.340.063.000
Steep Taper (MAS 403 BT) 50       HSK-A/C 63          678.350.063.000

Steep Taper (MAS 403 BT) to Steep Taper (DIN 69871) Adapters
Steep Taper (MAS 403 BT) to Steep Taper (DIN 69871) Adapters

Adapts from JIS B 6339 (MAS 403) BT to DIN 69871 (DIN SK taper).

Details PDF (678.800)

Spindle Taper (K) Adapter Taper (K1) D G L Part Number
Steep Taper (BT) 40     Steep Taper (DIN/BT) 30    50  M-12  60    678.340.830.000
Steep Taper (BT) 40     Steep Taper (DIN/BT) 40    68  M-16  87    678.340.840.000
Steep Taper (BT) 50     Steep Taper (DIN/BT) 40    70  M-16  63    678.350.840.000

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