JOINTDEX
Start Your Project

Data captured: · Published: · Update delayed: this release is over 8 days old.

Components › Unclassified › Harmonic Drive Systems
HPN-20A-45Add to cart
Series reference image, not this exact model · from harmonicdrive.netHPN-20A-45 — HPN-20A-45 — manufacturer part page image1 / 1
哈默纳科（上海）商贸有限公司 · Harmonic Drive Systems

HPN-20A-45

Unclassified · active · sources 2
specs 9evidence [n]sources 2

No verified public price. Request a quotation from the seller.

112 N·mAllowable start/stop torque
45Reduction ratio
1

Added to this browser's cart — no account, no contact details.

The prices here are distributors' listed figures, so this page does not take payment — a quote comes back with the real terms.

Put into a jointAsk on the supplier's site
Shipping · lead time[value]

Specs.

Check before you order.

field · keyvaluesource sentencesourceEvidenceRetrieved · Changed
Allowable start/stop torqueallowable_startstop_torque
valuemeasured at Reduction ratio 45
as printed 112112 N·m
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Weightweight
valuemeasured at Reduction ratio 45
as printed 4.64.6 kg
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Allowable start/stop torqueallowable_startstop_torque
value
as printed 112112 N·m
source sentenceLimit for Repeated Peak Torque 112 Nm
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox/20/hpn-20a-45 · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-06Changed —
Reduction ratioreduction_ratio
value
as printed 4545
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Rated torquerated_torque
valuemeasured at Reduction ratio 45 · Rated life basis Rated Torque L10
as printed 8484 N·m
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Rated torquerated_torque
valuemeasured at Reduction ratio 45 · Rated life basis Rated Torque L50
as printed 8080 N·m
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Peak torquepeak_torque
valuemeasured at Reduction ratio 45
as printed 256256 N·m
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Max input speedmax_input_speed
valuemeasured at Reduction ratio 45
as printed 6,0006000 r/min
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Backlashbacklash
valuemeasured at Reduction ratio 45
< 7
source sentenceHPN-20A-45 20 90 45 84 80 112 256 6,000 < 7 4.6
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-a-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
specs 9, 9 shown

Source documents.

2 sources the values were read from

2 documents
DownloadSource files are not published yet: which documents may be published is undecided.
No change
2026-09-06first collected · 2 sources
Next update2026-10-01

Change history kept

Build a joint around this part.

Once the family is set, this part can go into a joint.

Check joint combinations
JOINT · HPN-20A-45 · Unclassified
StatusNot applicable
  • Family not yet set

To settle before a verdict

Supplier.

WRC 2026 Beijing exhibitors, and other suppliers.

哈默纳科（上海）商贸有限公司Harmonic Drive Systems
WRC2026-B-008Hall BBooth B110CNharmonicdrive.net · official
This supplier's parts 1,815Supplier page

Alternatives in preparation

Keep this part in your BOM.

When the BOM opens, you can collect parts and send one enquiry.

Enquire about this partSee other parts