Weldon Tool Holder, DIN ISO 7388-1, SK50
(formerly DIN 69871)
Quality pass
Chuck fine balanced G2.5 at 22.000 rpm
All functional surfaces fine machined
Taper tolerance AT3
Coolant supply form AD/AF
For clamping cutters with cylindrical shank and Weldon flat similar to DIN 1835-B and DIN 6535-HB.
Similar to DIN 6359-2 with steep taper SK50 form AD/AF DIN ISO 7388-1 (formerly DIN 69871).
Form AD/AF means: Central coolant supply and coolant channels on the collar which can be sealed again.
  • Also suitable for ANSI-CAT
Scope of Delivery
  • With clamping screw
HAIMER TIP
For a constant and acurate cooling of te cutting tool we recommend the optional cooling system Cool Jet.
Weldon Tool Holder, DIN ISO 7388-1, SK50
asset-114739-1248
Description Norm: Value: metric/ inch
Clamping diameter D1 20 mm
Length A A 100 mm
A-length version long
Diameter 2 D2 52 mm
Interface SK50
Mass (weight) D7 3,870 kg
Standard number of properties layout NSM DIN4000-89
Body diameter 1 A1 52 mm
Flange diameter A4 97,5 mm
Interference diameter A6 36,989 mm
Length body diameter 1 B1 80,9 mm
Protruding length B3 100 mm
Overall length B4 201,75 mm
Taper angle B51 30 °
Functional length B71 75 mm
item style code BLD 508013
Connection code type machine side C11 SKG
Connection code form type machine side C12 17
Connection thread nominal size machine side C13 M24
Connection code unit base machine side C14 9
Connection code style machine side C15 5
Connection size code machine side C2 0500
Connection code type workpiece side C51 ZYL
Connection code form type workpiece side C52 10
Connection code unit base workpiece side C54 1
Connection code style workpiece side C55 5
Connection size code workpiece side C6 0200
Connection diameter min C71 20
Clamping length max. / nominal length C81 60,1 mm
Balance grade D5 G2,5/22000
Rotation speed, max D6 22000
Hand E1 N
coolant entry style code H21 7
coolant exit style code H22 1
Standard number J1 DIN1835-B, DIN6535-HB
Company identification J3 HAI
interface code to workpiece side J4 ZYL02001015
interface code to machine side J6 SKG05001795
Weight WT 3,870 kg
Standard number of properties layout NSM DIN4000-89
Body diameter 1 BD1 52 mm
Flange diameter DF 97,5 mm
Interference diameter DCINTF 36,989 mm
Length body diameter 1 LBD1 80,9 mm
Protruding length LPR 100 mm
Overall length OAL 201,75 mm
Taper angle TA 30 °
Functional length LF 75 mm
Connection code type machine side CCTMS SKG
Connection code unit base workpiece side CCUWS 1
Connection code style workpiece side CCSWS 5
Connection size code workpiece side CZCWS 0200
Connection diameter min DCONN 20
Clamping length max. / nominal length LSCX 60,1 mm
Hand HAND N
coolant entry style code CNSC 7
coolant exit style code CXSC 1
Company identification COMPC HAI
Downloads
Register to get access to free downloads of CAD data (DXF and STP) on our product websites.
Weldon Tool Holder, DIN ISO 7388-1, SK50
(formerly DIN 69871)
Quality pass
Chuck fine balanced G2.5 at 22.000 rpm
All functional surfaces fine machined
Taper tolerance AT3
Coolant supply form AD/AF
For clamping cutters with cylindrical shank and Weldon flat similar to DIN 1835-B and DIN 6535-HB.
Similar to DIN 6359-2 with steep taper SK50 form AD/AF DIN ISO 7388-1 (formerly DIN 69871).
Form AD/AF means: Central coolant supply and coolant channels on the collar which can be sealed again.
  • Also suitable for ANSI-CAT
Scope of Delivery
  • With clamping screw
HAIMER TIP
For a constant and acurate cooling of te cutting tool we recommend the optional cooling system Cool Jet.
Weldon Tool Holder, DIN ISO 7388-1, SK50
asset-114739-1248
Description Norm: Value: metric/ inch
Clamping diameter D1 20 mm
Length A A 100 mm
A-length version long
Diameter 2 D2 52 mm
Interface SK50
Mass (weight) D7 3,870 kg
Standard number of properties layout NSM DIN4000-89
Body diameter 1 A1 52 mm
Flange diameter A4 97,5 mm
Interference diameter A6 36,989 mm
Length body diameter 1 B1 80,9 mm
Protruding length B3 100 mm
Overall length B4 201,75 mm
Taper angle B51 30 °
Functional length B71 75 mm
item style code BLD 508013
Connection code type machine side C11 SKG
Connection code form type machine side C12 17
Connection thread nominal size machine side C13 M24
Connection code unit base machine side C14 9
Connection code style machine side C15 5
Connection size code machine side C2 0500
Connection code type workpiece side C51 ZYL
Connection code form type workpiece side C52 10
Connection code unit base workpiece side C54 1
Connection code style workpiece side C55 5
Connection size code workpiece side C6 0200
Connection diameter min C71 20
Clamping length max. / nominal length C81 60,1 mm
Balance grade D5 G2,5/22000
Rotation speed, max D6 22000
Hand E1 N
coolant entry style code H21 7
coolant exit style code H22 1
Standard number J1 DIN1835-B, DIN6535-HB
Company identification J3 HAI
interface code to workpiece side J4 ZYL02001015
interface code to machine side J6 SKG05001795
Weight WT 3,870 kg
Standard number of properties layout NSM DIN4000-89
Body diameter 1 BD1 52 mm
Flange diameter DF 97,5 mm
Interference diameter DCINTF 36,989 mm
Length body diameter 1 LBD1 80,9 mm
Protruding length LPR 100 mm
Overall length OAL 201,75 mm
Taper angle TA 30 °
Functional length LF 75 mm
Connection code type machine side CCTMS SKG
Connection code unit base workpiece side CCUWS 1
Connection code style workpiece side CCSWS 5
Connection size code workpiece side CZCWS 0200
Connection diameter min DCONN 20
Clamping length max. / nominal length LSCX 60,1 mm
Hand HAND N
coolant entry style code CNSC 7
coolant exit style code CXSC 1
Company identification COMPC HAI
Downloads
Register to get access to free downloads of CAD data (DXF and STP) on our product websites.
All product variants
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Order No. A-length version Clamping diameter Interface Length A Downloads metric/ inch
50.300.06 short 6 mm SK50 63 mm
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50.300.08 short 8 mm SK50 63 mm
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50.300.10 short 10 mm SK50 63 mm
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50.300.10.2 short 10 mm SK50 63 mm
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50.300.12 short 12 mm SK50 63 mm
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50.300.12.2 short 12 mm SK50 63 mm
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50.300.14 short 14 mm SK50 63 mm
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50.300.16 short 16 mm SK50 63 mm
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50.300.16.2 short 16 mm SK50 63 mm
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50.300.18 short 18 mm SK50 63 mm
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50.300.20 short 20 mm SK50 63 mm
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50.300.20.2 short 20 mm SK50 63 mm
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50.300.25 short 25 mm SK50 80 mm
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50.300.32 short 32 mm SK50 100 mm
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50.300.40 short 40 mm SK50 100 mm
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50.301.06 long 6 mm SK50 100 mm
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50.301.08 long 8 mm SK50 100 mm
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50.301.10 long 10 mm SK50 100 mm
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50.301.12 long 12 mm SK50 100 mm
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50.301.14 long 14 mm SK50 100 mm
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50.301.16 long 16 mm SK50 100 mm
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50.301.18 long 18 mm SK50 100 mm
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50.301.20 long 20 mm SK50 100 mm
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50.301.25 long 25 mm SK50 100 mm
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50.304.06 ZG130 6 mm SK50 130 mm
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50.304.08 ZG130 8 mm SK50 130 mm
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50.304.10 ZG130 10 mm SK50 130 mm
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50.304.12 ZG130 12 mm SK50 130 mm
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50.304.14 ZG130 14 mm SK50 130 mm
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50.304.16 ZG130 16 mm SK50 130 mm
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50.304.18 ZG130 18 mm SK50 130 mm
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50.304.20 ZG130 20 mm SK50 130 mm
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50.304.25 ZG130 25 mm SK50 130 mm
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50.304.32 ZG130 32 mm SK50 130 mm
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50.304.40 ZG130 40 mm SK50 130 mm
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Haimer Care
Haimer Care
The quality at Haimer is not only by the product, but also by the accompanying services.

Scope of service
  • Early wear detection 
  • Preservation of the target condition 
  • High availability of HAIMER specialists 
  • Consistent quality level 
  • Prerequisite for certification according to ISO 9001
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