Hardinge Tool Holders, Toolholder Collets and Bushings Catalog ...

"Cool Stop" Coolant Seals for ER & TG Collets
Maximize coolant flow through your drills with the "Cool Stop" system. The "Cool Stop"
seals around the shank of the drill and the ID of the ER and TG holders. The gauge length of
the holder does not change. The collet stays flush with the cap because the "Cool Stop" seal
locates at the back of the collet. Each "Cool Stop" has a range from rated size down to .020"
(5.0 mm), resulting in a small seal inventory for each collet style. You can keep the coolant
running through the drill, rather than of the collet, at pressures up to 1500 psi.
ER16, ER20, ER25, ER32 "Cool Stop" Seals — Metric
Size Range ER16 Seal ER20 Seal ER25 Seal ER32 Seal
mm Inch Part Number Part Number Part Number Part Number
5.5 - 5.0 .217" - .197" 7988-01-16-055000 7988-01-20-055000 7988-01-25-055000 7988-01-32-055000
6.0 - 5.5 .236" - .217" 7988-01-16-060000 7988-01-20-060000 7988-01-25-060000 7988-01-32-060000
6.5 - 6.0 .256" - .236" 7988-01-16-065000 7988-01-20-065000 7988-01-25-065000 7988-01-32-065000
7.0 - 6.5 .276" - .256" 7988-01-16-070000 7988-01-20-070000 7988-01-25-070000 7988-01-32-070000
7.5 - 7.0 .295" - .276" 7988-01-16-075000 7988-01-20-075000 7988-01-25-075000 7988-01-32-075000
8.0 - 7.5 .315" - .295" 7988-01-16-080000 7988-01-20-080000 7988-01-25-080000 7988-01-32-080000
8.5 - 8.0 .335" - .315" 7988-01-20-085000 7988-01-25-085000 7988-01-32-085000
9.0 - 8.5 .354" - .335" 7988-01-20-090000 7988-01-25-090000 7988-01-32-090000
9.5 - 9.0 .374" - .354" 7988-01-20-095000 7988-01-25-095000 7988-01-32-095000
10.0 - 9.5 .394" - .374" 7988-01-20-100000 7988-01-25-100000 7988-01-32-100000
10.5 - 10.0 .413" - .394" 7988-01-25-105000 7988-01-32-105000
11.0 - 10.5 .433" - .413" 7988-01-25-110000 7988-01-32-110000
11.5 - 11.0 .453" - .433" 7988-01-25-115000 7988-01-32-115000
12.0 - 11.5 .472" - .453" 7988-01-25-120000 7988-01-32-120000
12.5 - 12.0 .492" - .472" 7988-01-25-125000 7988-01-32-125000
13.0 - 12.5 .512" - .492" 7988-01-25-130000 7988-01-32-130000
13.5 - 13.0 .531" - .512" 7988-01-25-135000 7988-01-32-135000
14.0 - 13.5 .551" - .531" 7988-01-25-140000 7988-01-32-140000
14.5 - 14.0 .571" - .551" 7988-01-25-145000 7988-01-32-145000
15.0 - 14.5
15.5 - 15.0
.591" - .571"
.610" - .591" TG100 "Cool Stop" Seals — Inch
7988-01-32-150000
7988-01-32-155000
16.0 - 15.5 .630" - .610" Size Range TG100 Seal
7988-01-32-160000
16.5 - 16.0 .650" - .630" Inch mm Part Number
7988-01-32-165000
17.0 - 16.5 .669" - .650" 3 ⁄4" - .734" 19.1 - 18.6 7988-02-10-007500 7988-01-32-170000
17.5 - 17.0 .689" - .669" 49
⁄64" - .750" 19.4 - 19.1 7988-02-10-007656 7988-01-32-175000
18.0 - 17.5 .709" - .689" 25
⁄32" - .765" 19.8 - 19.4 7988-02-10-007812 7988-01-32-180000
18.5 - 18.0 .728" - .709" 51
⁄64" - .781" 20.2 - 19.8 7988-02-10-007968 7988-01-32-185000
19.0 - 18.5 .748" - .728" 13
⁄16" - .796" 20.6 - 20.2 7988-02-10-008125 7988-01-32-190000
19.5 - 19.0 .768" - .748" 53
⁄64" - .812" 21.0 - 20.6 7988-02-10-008281 7988-01-32-195000
Seal Cross Section
20.0 - 19.5 .787" - .768" 27
⁄32" - .828" 21.4 - 21.0 7988-02-10-008437 7988-01-32-200000
55
⁄64" - .843" 21.8 - 21.4 7988-02-10-008593
Quick Assembly:
7 ⁄8" - .859" 22.2 - 21.8 7988-02-10-008750
Put the collet in the cap, the drill through the collet,
the "Cool Stop" seal on the drill shank and insert the
assembly into the holder. Adjust the drill to the proper
length and lock the cap. You are now ready to increase
57
⁄64" - .875"
29
⁄32" - .890"
59
⁄64" - .906"
15
⁄16" - .921"
22.6 - 22.2
23.0 - 22.6
23.4 - 23.0
23.8 - 23.4
7988-02-10-008906
7988-02-10-009062
7988-02-10-009218
7988-02-10-009375
your productivity.
61
⁄64" - .937" 24.2 - 23.8 7988-02-10-009531
31
⁄32" - .953" 24.6 - 24.2 7988-02-10-009687
63
⁄64" - .968" 25.0 - 24.6 7988-02-10-009843
1.0" - .984" 25.4 - 25.0 7988-02-10-010000
16—Toolholder Collets, Bushings & Tool Holders Hardinge Inc. | 800.843.8801 | www.shophardinge.com